United States v. Welch ( 1993 )


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    UNITED STATES COURT OF APPEALS
    FOR THE FIRST CIRCUIT
    _________________________

    Nos. 92-1362
    92-1574
    UNITED STATES OF AMERICA,
    Appellee,

    v.

    DAVID SEPULVEDA,
    Defendant, Appellant.
    _________________________


    No. 92-1364
    UNITED STATES OF AMERICA,
    Appellee,

    v.

    EDGAR SEPULVEDA,
    Defendant, Appellant.

    _________________________

    No. 92-1366
    UNITED STATES OF AMERICA,
    Appellee,

    v.

    EDWARD W. WELCH, JR.,
    Defendant, Appellant.

    _________________________

    No. 92-1367
    UNITED STATES OF AMERICA,
    Appellee,

    v.

    ARLINE S. WELCH,
    Defendant, Appellant.

    _________________________




    No. 92-1369
    UNITED STATES OF AMERICA,














    Appellee,

    v.

    KEVIN CULLINANE,
    Defendant, Appellant.
    _________________________

    No. 92-1371
    UNITED STATES OF AMERICA,
    Appellee,

    v.

    CHERYL T. JOHNSON,
    Defendant, Appellant.
    _________________________

    No. 92-1373

    UNITED STATES OF AMERICA,
    Appellee,

    v.

    RICHARD F. LABRIE,
    Defendant, Appellant.
    _________________________

    No. 92-1374

    UNITED STATES OF AMERICA,
    Appellee,

    v.

    TONY ROOD,
    Defendant, Appellant.

    _________________________

    No. 92-1375

    UNITED STATES OF AMERICA,
    Appellee,

    v.

    WILLIAM D. WALLACE,
    Defendant, Appellant.

    _________________________
    Nos. 92-1573
    92-1629














    UNITED STATES OF AMERICA,
    Appellee,

    v.

    ERNEST F. LANGLOIS,
    Defendant, Appellant.
    _________________________

    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF NEW HAMPSHIRE

    [Hon. Shane Devine, U. S. District Judge]
    ____________________
    _________________________

    Before

    Selya, Cyr and Boudin, Circuit Judges.
    ______________
    _________________________

    David H. Bownes, with whom David H. Bownes, P.C. was on
    ________________ ______________________
    brief, for defendant David Sepulveda.
    Julia M. Nye, with whom McKean, Mattson and Latici, P.A. was
    ____________ ________________________________
    on brief, for defendant Edgar Sepulveda.
    Stephen A. Cherry, with whom Wright & Cherry was on brief,
    _________________ _______________
    for defendant Edward W. Welch, Jr.
    Kevin M. Fitzgerald, with whom Peabody & Brown was on brief,
    ___________________ _______________
    for defendant Arline S. Welch.
    Michael J. Ryan, with whom King and Ryan was on brief, for
    _______________ ______________
    defendant Kevin Cullinane.
    Robert P. Woodward for defendant Cheryl T. Johnson.
    __________________
    Mark H. Campbell for defendant Richard Labrie.
    ________________
    Paul J. Garrity on brief for defendant Tony Rood.
    _______________
    Matthew J. Lahey, with whom Murphy, McLaughlin, Hemeon &
    _________________ ______________________________
    Lahey, P.A. was on brief, for defendant William D. Wallace.
    ___________
    Julie L. Lesher, with whom Murphy, McLaughlin, Hemeon &
    ________________ ______________________________
    Lahey, P.A. was on brief, for defendant Ernest F. Langlois.
    ___________
    John P. Rab for defendant Christopher Driesse (appellant in
    ____________
    consolidated appeal).
    Paul J. Haley, with whom Scott L. Hood was on brief, for
    ______________ ______________
    defendant Shane Welch (appellant in consolidated appeal).
    Kevin M. Fitzgerald, Kevin M. Leach, McLane, Graf, Raulerson
    ___________________ ______________ _______________________
    & Middleton, Peabody & Brown and David H. Bownes on omnibus
    ____________ ________________ ________________
    briefs for all appellants.
    Terry L. Ollila, Special Assistant United States Attorney,
    ________________
    with whom Peter E. Papps, United States Attorney, and Jeffrey S.
    ______________ __________
    Cahill, Special Assistant United States Attorney, were on brief,
    ______
    for appellee.
    _________________________
    December 20, 1993
    _________________________

















    SELYA, Circuit Judge. These appeals, arising out of
    SELYA, Circuit Judge.
    _____________

    the drug-trafficking convictions of a dozen New Hampshire

    residents, suggest that while two New Hampshiremen might once

    have been a match for Satan, see Stephen Vincent Benet, The Devil
    ___ _________

    and Daniel Webster (1937), times have changed. The tale follows.
    __________________

    I. BACKGROUND
    I. BACKGROUND

    During a two-month trial in the district court, the

    government mined a golconda of evidence. Because it would serve

    no useful purpose to recount the occasionally ponderous record in

    book and verse, we offer instead an overview of the evidence,

    taken in the light most compatible with the guilty verdicts. See
    ___

    United States v. Ortiz, 966 F.2d 707, 711 (1st Cir. 1992), cert.
    _____________ _____ _____

    denied, 113 S. Ct. 1005 (1993). Further facts will be added as
    ______

    we discuss specific issues.

    For almost six years, David Sepulveda conducted an

    increasingly sophisticated cocaine distribution business in and

    around Manchester, New Hampshire. Initially, Sepulveda purchased

    cocaine from a vendor in Nashua, New Hampshire, and transported

    it to Manchester himself. Over time, Sepulveda expanded his

    operation, increasing the volume of cocaine and engaging others

    to handle tasks such as pickup, delivery, and street-level sales.

    As his enterprise grew more ambitious, Sepulveda began

    purchasing cocaine from a source in Lawrence, Massachusetts.

    Faced with the need to retain control while insulating himself

    from the prying eyes of law enforcement personnel, Sepulveda's

    journeys to Lawrence became an elaborate ritual in which he would


    4














    scrupulously avoid carrying drugs or travelling in the same car

    with the cocaine that he purchased. On these provisioning trips,

    Sepulveda was usually accompanied by his brother, Edgar, and a

    "runner," that is, an individual who would actually transport the

    cocaine from Lawrence to Manchester.1 Frequently, one of

    Sepulveda's distributors or a user in a particular hurry to

    obtain fresh supplies would join the troupe.

    Once the cocaine arrived in Manchester, Sepulveda and

    his associates packaged it in street-level quantities and

    distributed it to a series of individuals for resale and personal

    use. The buyers included, among others, defendants Edward W.

    Welch, Jr., Arline S. Welch, Shane Welch, Kevin Cullinane,

    Christopher Driesse, Cheryl T. Johnson, Richard E. Labrie, Tony

    Rood, and William D. Wallace. David Sepulveda made a practice of

    directing persons who inquired about purchasing small amounts of

    cocaine to these same individuals.

    Eventually, David Sepulveda's reach exceeded his grasp.

    A federal grand jury indicted him, along with others, for drug

    trafficking; and, after trial, a petit jury convicted twelve

    persons, viz., the Sepulveda brothers, the three Welches,
    ____

    Cullinane, Driesse, Johnson, Labrie, Rood, Wallace, and Langlois,

    on a charge of conspiracy to possess and distribute cocaine. See
    ___

    21 U.S.C. 846 (1988). The jury also convicted David Sepulveda

    on a charge of engaging in a continuing criminal enterprise. See
    ___

    ____________________

    1At various times, defendants Tony Rood and Ernest F.
    Langlois worked as runners. At other times, Norberto Perez
    played this role.

    5














    21 U.S.C. 848 (1988). Twenty-six appeals ensued.

    It is no exaggeration to say that the defendants,

    represented by able counsel, managed to cultivate a profusion of

    variegated grounds for appeal from the peat of the protracted

    trial. Because of the sheer bulk and complexity of the

    proceedings, we issued a special briefing order and then heard

    oral argument on all twenty-six appeals. We decide today twelve

    appeals taken by ten defendants (collectively, "the

    appellants").2 After sifting what grains we can locate from the

    considerable chaff, we conclude that the appellants enjoyed a

    fair, substantially error-free trial, and that their convictions

    must stand. In two instances, however, we vacate particular

    sentences and remand for further proceedings.

    II. SUFFICIENCY OF THE EVIDENCE
    II. SUFFICIENCY OF THE EVIDENCE

    Four appellants claim that the evidence is

    insufficient, as a matter of law, to support their convictions.3

    Because insufficiency claims are commonplace in criminal appeals,

    the standard of appellate oversight lends itself to rote

    ____________________

    2The appeals taken by defendants Christopher Driesse and
    Shane Welch following the trial present certain unique issues and
    those two appeals will be resolved in a separate opinion. In
    addition, after the original round of appeals had been docketed,
    all twelve defendants moved to vacate judgment on the basis of
    newly discovered evidence. The court below denied relief and a
    fresh battery of appeals ensued. Those twelve late-blooming
    appeals were argued in tandem with the fourteen earlier appeals
    and will be disposed of in a third opinion.

    3We do not include under this rubric appellants Edgar
    Sepulveda and Tony Rood, both of whom argue that the government
    failed to present sufficient evidence to show their participation
    in the single "master conspiracy" charged in the indictment.
    Instead, we treat with those claims in Part IX, infra.
    _____

    6














    recitation. Following a guilty verdict, a reviewing court must

    scrutinize the record, eschewing credibility judgments and

    drawing all reasonable inferences in favor of the verdict, to

    ascertain if a rational jury could have found that the government

    proved each element of the crime beyond a reasonable doubt. See
    ___

    United States v. Echeverri, 982 F.2d 675, 677 (1st Cir. 1993);
    _____________ _________

    Ortiz, 966 F.2d at 711; United States v. David, 940 F.2d 722, 730
    _____ _____________ _____

    (1st Cir. 1991) (collecting cases), cert. denied, 112 S. Ct. 2301
    _____ ______

    (1992). To sustain a conviction, the court need not conclude

    that only a guilty verdict appropriately could be reached; it is

    enough that the finding of guilt draws its essence from a

    plausible reading of the record. See Echeverri, 982 F.2d at 677;
    ___ _________

    Ortiz, 966 F.2d at 711.
    _____

    Here, the challenged convictions center around a charge

    of conspiracy to possess and distribute cocaine. To prove a drug

    conspiracy charge under 21 U.S.C. 846, the government is

    obliged to show beyond a reasonable doubt that a conspiracy

    existed and that a particular defendant agreed to participate in

    it, intending to commit the underlying substantive offense (here,

    possession of cocaine with intent to distribute, 21 U.S.C.

    841(a)(1)). See David, 940 F.2d at 735; United States v.
    ___ _____ ______________

    Sanchez, 917 F.2d 607, 610 (1st Cir. 1990), cert. denied, 111 S.
    _______ _____ ______

    Ct. 1625 (1991); United States v. Rivera-Santiago, 872 F.2d 1073,
    _____________ _______________

    1079 (1st Cir.), cert. denied, 492 U.S. 910 (1989). There are no
    _____ ______

    particular formalities that attend this showing: the agreement

    may be express or tacit and may be proved by direct or


    7














    circumstantial evidence. See Echeverri, 982 F.2d at 679; Rivera-
    ___ _________ _______

    Santiago, 872 F.2d at 1079. Moreover, in a criminal conspiracy,
    ________

    culpability may be constant though responsibilities are divided;

    the government does not need to show as a precursor to a finding

    of guilt that a given defendant took part in all aspects of the

    conspiracy. See United States v. Benevides, 985 F.2d 629, 633
    ___ _____________ _________

    (1st Cir. 1993); United States v. Cruz, 981 F.2d 613, 617 (1st
    ______________ ____

    Cir. 1992). Using these guideposts, we find that the quantum of

    evidence presented against each of the four challengers suffices.

    A. Arline Welch.
    A. Arline Welch.
    ____________

    Four witnesses provided the bulk of the evidence

    regarding Arline Welch's role in the conspiracy. Kurt Coriaty

    testified that he had purchased cocaine from her both in her home

    and in his, particularly after her husband, Edward Welch, was

    imprisoned. Coriaty's partner, Kenneth Milne, stated that Arline

    Welch gave him cocaine at her home and was present when he

    purchased cocaine from Edward Welch at the Welch residence.

    While mere presence is not sufficient to ground criminal charges,

    a defendant's presence at the point of a drug sale, taken in the

    light of attendant circumstances, can constitute strong evidence

    of complicity. See Ortiz, 966 F.2d at 711-12.
    ___ _____

    The jury also heard Norberto Perez explain that Arline

    Welch accompanied David Sepulveda on three buying expeditions to

    Lawrence, Massachusetts. Perez testified that, in expressing

    anxiety, she made manifest her awareness of the trips' purpose,

    voicing statements like: "Let's hurry up and get this cocaine so


    8














    we can get out of here." Furthermore, Randall Vetrone testified

    that Arline Welch was present in Edgar Sepulveda's apartment

    while the Sepulveda brothers packaged and sold cocaine.

    Appellant's consensual presence in a private home, not her own,

    while large quantities of drugs were being packaged for resale,

    possessed evidentiary significance. From this fact, coupled with

    other contextual detail (much of it inculpatory), the jury

    reasonably could have inferred that she was a member of the ring.

    See Ortiz, 966 F.2d at 712 (pointing out that criminals rarely
    ___ _____

    seek to expose their felonious activities to innocent outsiders,

    where such exposure could easily be avoided); United States v.
    ______________

    Batista-Polanco, 927 F.2d 14, 18-19 (1st Cir. 1991) (to like
    _______________

    effect).

    Keeping in mind the maxim that "criminal juries are not

    expected to ignore what is perfectly obvious," Echeverri, 982
    _________

    F.2d at 679, the testimony of these four witnesses and the

    reasonable inferences to be drawn therefrom formed a serviceable

    predicate upon which to rest a conviction for conspiracy to

    distribute cocaine.4 Accordingly, the district court did not err

    in denying Arline Welch's motion for judgment of acquittal.

    B. Kevin Cullinane.
    B. Kevin Cullinane.
    _______________

    Daniel Santos, a quondam partner of Cullinane's in the

    ____________________

    4We give short shrift to Welch's argument, echoed at various
    times by other appellants, that, because some of the government's
    witnesses anticipated receiving reduced sentences in exchange for
    cooperation, their testimony should be regarded as inherently
    unreliable. When an appellate court reviews the sufficiency of
    the evidence, it must resolve routine credibility questions in
    favor of the verdict. See David, 940 F.2d at 730.
    ___ _____

    9














    drug distribution trade, testified that Cullinane introduced him

    to David Sepulveda and that Sepulveda eventually became a

    principal supplier of cocaine to the Cullinane-Santos

    partnership. Santos also testified that Cullinane accompanied

    Sepulveda on provisioning trips, returning to Santos's apartment

    with fresh supplies of contraband. The ubiquitous Norberto Perez

    corroborated this relationship, testifying that he had travelled

    to Lawrence on at least five occasions in the company of

    Cullinane and the Sepulveda siblings in order to replenish

    cocaine stores. Perez also recreated a conversation that took

    place between Cullinane and Sepulveda involving the former's

    indebtedness to the latter for transactions in cocaine.

    The government adduced abundant evidence that Cullinane

    distributed much of the contraband he acquired. Perez and Santos

    both described Cullinane's activities as a vendor. John Rice

    testified that Cullinane delivered cocaine to defendant

    Christopher Driesse, and that Driesse, in turn, would resell the

    drugs. Santos confirmed that Cullinane procured these drugs from

    David Sepulveda and that Sepulveda extended credit to Cullinane.

    Another witness, David Chase, acknowledged that he had purchased

    up to eight kilograms of cocaine from Cullinane before concluding

    that, aphorisms about honor among thieves notwithstanding,

    Cullinane could not be trusted.5

    In view of this plenitudinous testimony, the court


    ____________________

    5When Chase and Cullinane fell out, Chase took his business
    directly to David Sepulveda.

    10














    below appropriately derailed Cullinane's quest for acquittal as a

    matter of law.



    C. Ernest Langlois.
    C. Ernest Langlois.
    _______________

    David Sepulveda hired Langlois to be both a drug

    courier and a torpedo. Langlois's resounding success in the

    latter role intimidating Sepulveda's debtors and, sometimes,

    his associates produced a suffusion of testimony limning

    Langlois's role in the organization. For instance, David Hill

    described four occasions on which Langlois used force, or threats

    of force, to collect debts owed to Sepulveda. Two other

    witnesses testified that Sepulveda boasted of employing Langlois

    as a strongarm to collect drug debts. Another witness overheard

    Langlois crowing about the nature of his employment. And no

    fewer than six witnesses relayed information from which a

    rational jury could infer that Langlois "rode shotgun" during

    drug-buying expeditions.

    As this partial summary indicates, the evidence

    accumulated against Langlois rose well above the level necessary

    to sustain the jury's verdict.

    D. Cheryl Johnson.
    D. Cheryl Johnson.
    ______________

    Two witnesses, Santos and Kathy Malone (an undercover

    police officer), testified that David Sepulveda sent them to

    Cheryl Johnson when they wanted to buy cocaine. Santos said that

    he purchased cocaine from Johnson on approximately one hundred

    occasions, during which transactions Johnson offhandedly revealed


    11














    the full extent of her copious cocaine inventory. Malone stated

    that she purchased cocaine from Johnson on three occasions.6

    Perez testified that he, too, bought cocaine from Johnson,

    delivered cocaine to Johnson at Sepulveda's behest, and

    accompanied her on at least one buying trip to Lawrence.

    Although Johnson argues vehemently that the witnesses

    against her were inherently unreliable, courts must leave such

    credibility determinations in the jury's domain. See David, 940
    ___ _____

    F.2d at 730. Here, the jury was at liberty to credit the

    testimony, and it, in turn, supplied all the elements necessary

    to convict.

    III. SEQUESTRATION
    III. SEQUESTRATION

    Appellants claim that, shortly after sentencing, they

    learned for the first time that the government housed three key

    witnesses (Perez, Milne, and Coriaty) in the same cell throughout

    the trial. Appellants moved for a new trial,7 alleging that the

    housing arrangements violated a sequestration order issued by the

    district court. The government not only contested appellants'

    conclusion but also contested the premise on which the conclusion

    ____________________

    6Both Santos and Malone also testified that they bought
    cocaine from defendant Richard Labrie at Johnson's abode.

    7These motions are separate from, and much earlier in time
    than, the motions to which we alluded in note 2, supra.
    _____
    Nonetheless, these motions, like the later motions, invoked Fed.
    R. Crim. P. 33. We grant appellants a considerable indulgence,
    assuming arguendo that the information concerning the witnesses'
    ________
    living arrangements was not discoverable before or during trial
    with the exercise of due diligence. See United States v. Slade,
    ___ _____________ _____
    980 F.2d 27, 29 (1st Cir. 1992) (articulating standard); United
    ______
    States v. Natanel, 938 F.2d 302, 313 (1st Cir. 1991) (similar),
    ______ _______
    cert. denied, 112 S. Ct. 986 (1992).
    _____ ______

    12














    rested, asserting that, though the three men were lodged within

    the same cell block, they did not share a cell.

    For reasons that are somewhat opaque, the district

    court denied the motion without a hearing and without findings

    anent the accuracy of appellants' "three to a cell" allegation.

    Instead, the court determined that, regardless of the dormitory

    arrangements, its sequestration order had not been flouted. It

    is against this rather spartan background that we undertake our

    analysis.8

    A. Rule 615.
    A. Rule 615.
    ________

    The sanctum sanctorum of supervised sequestration
    _______ _________

    states in its salient segment:

    At the request of a party the court
    shall order witnesses excluded so that they
    cannot hear the testimony of other witnesses,
    and it may make the order of its own motion.

    Fed. R. Evid. 615. The rule more or less codifies common-law

    sequestration powers, but it is at once less discretionary and

    less stringent than its forebears. On one hand, the rule cabins

    the judge's discretion by affording all parties a right to close
    _____

    ____________________

    8To recognize that the record sheds no light on the factual
    underpinnings of the sequestration dispute is not to imply that
    the defense lacked opportunity to explore the possibility of
    sequestration violations. During trial, appellants cross-
    examined all three witnesses at length, inquiring, inter alia,
    _____ ____
    whether they had discussed the case with others. The examination
    elicited no evidence that the trio traded tales concerning past,
    present, or future testimony. Cf. United States v. Eyster, 948
    ___ _____________ ______
    F.2d 1196, 1210 (11th Cir. 1991) (finding that witnesses housed
    in the same cell who admitted discussing testimony with each
    other violated a sequestration order). Moreover, appellants knew
    all along that Perez, Milne, and Coriaty dwelled at the same
    penitentiary, yet they made no specific inquiries about the
    congregant housing arrangement.

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    the courtroom to prospective witnesses.9 On the other hand,

    while the common law supported sequestration beyond the

    courtroom, see 6 John Wigmore, Evidence 1840, at 471 n.7 (1976)
    ___ ________

    (stating that, at common law, the sequestration process involves

    three parts: preventing prospective witnesses from consulting

    each other; preventing witnesses from hearing other witnesses

    testify; and preventing prospective witnesses from consulting

    witnesses who have already testified), Rule 615 contemplates a

    smaller reserve; by its terms, courts must "order witnesses

    excluded" only from the courtroom proper, see Perry v. Leeke, 488
    ___ _____ _____

    U.S. 272, 281 & n.4 (1989); United States v. Arruda, 715 F.2d
    _____________ ______

    671, 684 (1st Cir. 1983). In sum, the rule demarcates a compact

    procedural heartland, but leaves appreciable room for judicial

    innovation beyond the perimeters of that which the rule

    explicitly requires. See United States v. De Jongh, 937 F.2d 1,
    ___ _____________ ________

    3 (1st Cir. 1991) (stating that district courts possess

    "considerable discretion" to fashion orders pertaining to

    sequestration).10

    ____________________

    9The rule's stringencies in that respect have not been
    adopted by all states. See 6 John Wigmore, Evidence 1837, at
    ___ ________
    458 n.11 (1976); see also id. at 35 (Supp. 1991) (compiling
    ___ ____ ___
    data). Rather, many states continue to leave sequestration
    decisions solely within the judge's discretion. See, e.g., R.I.
    ___ ____
    R. Evid. 615.

    10Citing United States v. Greschner, 802 F.2d 373 (10th Cir.
    _____________ _________
    1986), cert. denied, 480 U.S. 908 (1987), appellants postulate
    _____ ______
    that Rule 615 requires sequestration beyond the courtroom door.
    Although Greschner does equate "circumvention" of Rule 615 with a
    _________
    violation of the rule itself, it concedes that controlling such
    circumvention rests within the district court's discretion a
    condition that clearly does not apply to violations of Rule 615
    itself. Id. at 375-76. Thus, Greschner fails to support
    ___ _________

    14














    Outside of the heartland, the district court may make

    whatever provisions it deems necessary to manage trials in the

    interests of justice, see id., including the sequestration of
    ___ ___

    witnesses before, during, and after their testimony, see Geders
    ___ ______

    v. United States, 425 U.S. 80, 87 (1976), and compelling the
    _____________

    parties to present witnesses in a prescribed sequence, see United
    ___ ______

    States v. Machor, 879 F.2d 945, 954 (1st Cir. 1989), cert.
    ______ ______ _____

    denied, 493 U.S. 1094 (1990). Rule 615 neither dictates when and
    ______

    how this case-management power ought to be used nor mandates any

    specific extra-courtroom prophylaxis, instead leaving the

    regulation of witness conduct outside the courtroom to the

    district judge's discretion. See United States v. Arias-Santana,
    ___ _____________ _____________

    964 F.2d 1262, 1266 (1st Cir. 1992) (explaining that a federal

    trial court may enter non-discussion orders at its discretion);

    see also Arruda, 715 F.2d at 684 (holding that there was
    ___ ____ ______

    "technically" no violation of sequestration where witnesses

    conversed outside the courtroom).
    _______

    This is not to say, however, that sequestration orders

    which affect witnesses outside the courtroom are a rarity. As a

    practical matter, district courts routinely exercise their

    discretion to augment Rule 615 by instructing witnesses, without

    making fine spatial distinctions, that they are not to discuss

    their testimony. Indeed, such non-discussion orders are

    generally thought to be a standard concomitant of basic

    sequestration fare, serving to fortify the protections offered by

    ____________________

    appellants' thesis.

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    Rule 615. See Perry, 488 U.S. at 281-82.
    ___ _____

    B. Sequestration and Cohabitation.
    B. Sequestration and Cohabitation.
    ______________________________

    Here, appellants moved in advance of trial for

    sequestration without indicating to the court what level of

    restraint they thought appropriate. The court granted the motion

    in its simplest aspect, directing counsel "to monitor

    sequestration" and ordering "that witnesses who are subject to

    [the court's] order are not to be present in the courtroom at any

    time prior to their appearance to render testimony." At trial,

    the district court expanded its earlier order beyond the Rule 615

    minimum, instructing each witness at the close of his or her

    testimony not to discuss that testimony with any other witness.

    Appellants accepted the conditions of sequestration described by

    the court without demurrer. What is more, they did not request

    any further instructions, say, that witnesses be directed at the

    end of each day, or before each recess, not to discuss their

    testimony. Thus, every witness was placed under an order

    prohibiting discussion of the case with other witnesses only upon

    the completion of his or her testimony.

    On these facts, the district court's denial of relief

    must be upheld. The court's basic sequestration order, which

    ploughed a straight furrow in line with Rule 615 itself, did not

    extend beyond the courtroom. There has been no intimation that

    the witnesses transgressed this order. Moreover, because the

    district court did not promulgate a non-discussion order

    applicable to any witness until the conclusion of that witness's


    16














    testimony, Perez, Milne, and Coriaty were under no obligation,

    prior to that moment, to refrain from discussing their

    recollections with each other. Finally, there is no evidence

    that any of the three ever chatted about the case with another

    witness after having been admonished to the contrary or at any

    earlier time, for that matter.

    Given this predicate, appellants' plaint reduces to the

    unprecedented proposition that witness cohabitation constitutes

    an automatic violation of a standard sequestration order. The

    crux of sequestration, however, is communication between

    witnesses, not shared accommodations or geographic proximity.

    Social settings, such as communal housing or common work sites,

    may offer opportunities for witnesses to compare notes and gossip

    about their testimony, but such environments do not ensure that

    forbidden conversations will occur. We assume that witnesses,

    like all other persons subject to court orders, will follow the

    instructions they receive. Cf., e.g., Richardson v. Marsh, 481
    ___ ____ __________ _____

    U.S. 200, 206 (1987) (reiterating the "invariable assumption of

    the law that jurors follow their instructions"). We conclude,

    therefore, that the housing arrangement, in and of itself, did

    not violate an existing sequestration order.

    If doubt inhered and we see no room for any two

    other considerations would then be decisive. In the first place,

    a district court's interpretation of its own order is customarily

    accorded great weight. See, e.g., Witty v. Dukakis, 3 F.3d 517,
    ___ ____ _____ _______

    521 (1st Cir. 1993); Martha's Vineyard Scuba Hqtrs., Inc. v.
    ______________________________________


    17














    Unidentified, Wrecked & Abandoned Steam Vessel, 833 F.2d 1059,
    ________________________________________________

    1066-67 (1st Cir. 1987); Lefkowitz v. Fair, 816 F.2d 17, 22-23
    _________ ____

    (1st Cir. 1987). Here, the district court ruled that congregant

    housing of witnesses did not infringe on the sequestration that

    it decreed. When a trial court's interpretation of its own order

    tracks plain language and the actual sequence of events, that

    interpretation must be honored on appeal.

    In the second place, even if some implied ban on

    congregant housing of prisoner-witnesses existed, breach of a

    sequestration order would not automatically call for a new trial;

    rather, the need for a sanction, and the nature of one, if

    imposable, are matters committed to the trial court's sound

    discretion. See United States v. Rossetti, 768 F.2d 12, 16 (1st
    ___ _____________ ________

    Cir. 1985); Arruda, 715 F.2d at 684. Appellants' failure to
    ______

    request a broader sequestration order, coupled with the

    speculative nature of their claim of actual prejudice, renders it

    impossible to find an abuse of discretion here. See, e.g.,
    ___ ____

    Rossetti, 768 F.2d at 16.
    ________

    To sum up, our search of the record in this case

    discloses no reason to suspect that the government or its

    witnesses transgressed the existing sequestration order. And as

    we have indicated, if appellants desired a more vigorous

    sequestration regime, such as an edict that would have banned

    cohabitation or other contact amongst prisoner-witnesses, they

    had a duty to ask for it. They failed to do so. Under these

    circumstances, the district court appropriately declined to


    18














    overturn the convictions. See, e.g., De Jongh, 937 F.2d at 3;
    ___ ____ ________

    Rossetti, 768 F.2d at 16; see also Langel v. United States, 451
    ________ ___ ____ ______ _____________

    F.2d 957, 963 (8th Cir. 1971) (determining that district court's

    refusal to restrict witnesses from communicating with other

    witnesses, after some had testified, did not constitute error;

    defendants made "no showing . . . that Government witnesses did

    talk to each other after testifying").

    IV. DISPUTES ANENT DISCOVERY
    IV. DISPUTES ANENT DISCOVERY

    Appellants complain vociferously about the government's

    conduct during discovery. The complaints have a modest basis in

    fact. Over the course of this logistically complex trial, the

    government produced a number of documents in a seemingly

    lackadaisical fashion. On each of these occasions, defense

    counsel had to scramble in order to assess the nascent discovery

    and integrate it into their trial strategy. On other occasions,

    the government refused to produce documents that defense counsel

    believed were discoverable either as exculpatory material, see
    ___

    Brady v. Maryland, 373 U.S. 83, 87 (1963), or as fodder for
    _____ ________

    impeachment, see Giglio v. United States, 405 U.S. 150, 154-55
    ___ ______ ______________

    (1972); see also 18 U.S.C. 3500 (1988) (requiring the
    ___ ____

    government to disclose, after direct testimony and on the

    defendant's motion, any statement by the witness, in the

    government's possession, that relates to the subject matter of

    the witness's testimony). We discuss these two species of

    discovery problems separately.

    A. Delayed Discovery.
    A. Delayed Discovery.
    _________________


    19














    Prosecutors have an obligation to furnish exculpatory

    and impeachment information to the defense in a timely fashion.

    Although the government's obligation goes beyond the good-faith

    requirement of civil discovery, see United States v. Samalot
    ___ ______________ _______

    Perez, 767 F.2d 1, 4 (1st Cir. 1985), its bounds are not
    _____

    limitless. Patrolling these boundaries is primarily the duty of

    the nisi prius court. Because the district judge is better
    ____ _____

    attuned to the nuances of the trial, this court must take a

    deferential view of rulings made in the course of that patrol.

    When discovery material makes a belated appearance, a

    criminal defendant must ordinarily seek a continuance if he

    intends to claim prejudice. A continuance affords time to study

    the newly emergent information, consider its possible

    ramifications, change trial strategy (if necessary), assess any

    potential prejudice, and determine how best to use the

    information. As a general rule, a defendant who does not request

    a continuance will not be heard to complain on appeal that he

    suffered prejudice as a result of late-arriving discovery. See,
    ___

    e.g., United States v. Osorio, 929 F.2d 753, 758 (1st Cir. 1991);
    ____ _____________ ______

    see also United States v. Diaz-Villafane, 874 F.2d 43, 47 (1st
    ___ ____ _____________ ______________

    Cir.) (concluding, in an analogous context, that a defendant's

    cry of unfair surprise "is severely undermined, if not entirely

    undone, by his neglect to ask the district court for a

    continuance to meet the claimed exigency"), cert. denied, 493
    _____ ______

    U.S. 862 (1989). Thus, in situations where defense counsel does

    not seek a continuance upon belated receipt of discoverable


    20














    information, a court often can assume that counsel did not need

    more time to incorporate the information into the defense's game

    plan. See United States v. Ingraldi, 793 F.2d 408, 413 (1st Cir.
    ___ _____________ ________

    1986).

    This general rule spells defeat for the majority of

    appellants' delayed discovery claims. In every instance save

    one, appellants eschewed a request for a continuance. They have

    never satisfactorily explained how delays in production caused

    them any cognizable harm on those several occasions and the

    record, which reflects that appellants assimilated the new

    material without any perceptible hitch and used it to good

    effect, belies any such claim. The lack of demonstrable

    prejudice sounds the death knell for a "delayed discovery" claim.

    See United States v. Devin, 918 F.2d 280, 290 (1st Cir. 1990)
    ___ _____________ _____

    (explaining that a defendant who complains about tardiness in

    disclosure "cannot rely on wholly conclusory assertions but must

    bear the burden of producing, at the very least, a prima facie
    _____ _____

    showing of a plausible strategic option which the delay

    foreclosed"). Hence, we find appellants' delayed discovery

    claims, with one exception, to have been waived.

    The facts referable to the remaining dilatory

    disclosure claim can be succinctly summarized. Perez not only

    worked as a courier for David Sepulveda, but also supported his

    own cocaine habit by peddling drugs. After he was apprehended

    for selling cocaine, Perez agreed to testify against appellants

    in return for the United States Attorney's help in seeking a


    21














    reduced sentence. Since Perez was the only witness who tied all

    the defendants to David Sepulveda's illicit enterprise, his

    testimony was extremely important to the government's case.

    When defense lawyers began cross-examining Perez, it

    became apparent that the FBI records furnished in pretrial

    discovery did not list Perez's entire repertoire of criminal

    convictions, especially those stemming from state court

    proceedings and not reported to the FBI. When Perez acknowledged

    that a state probation officer had prepared a presentence report

    for a New Hampshire court, appellants asked for a continuance so

    that they might obtain this document and more fully research

    Perez's criminal history. The district court denied the motion

    but offered to permit the defense to recall Perez for further

    cross-questioning should the new information warrant it. The

    trial continued coincident with the defense's efforts to secure

    the presentence report.

    After some travail, New Hampshire authorities agreed to

    release the report to the federal court in camera. The district
    __ ______

    judge found that it contained little fresh material but he

    nonetheless issued a turnover order. The defense received the

    report while Perez was still on the witness stand. The judge

    refused to grant a mistrial or afford appellants any comparable

    redress.

    We see no error. The prosecution was caught unawares;

    it never knew of the report's existence and, therefore, could not

    have deliberately withheld it. Furthermore, the rigors of Brady
    _____


    22














    do not usually attach to material outside the federal

    government's control and the presentence report at issue here

    falls within the scope of this generality. See, e.g., United
    ___ ____ ______

    States v. Aichele, 941 F.2d 761, 764 (9th Cir. 1991) (holding
    ______ _______

    that a federal prosecutor had no duty to procure materials

    prepared for the state courts which were not otherwise under

    federal control).

    Last, but far from least, delayed disclosure claims

    cannot succeed unless the aggrieved defendant demonstrates

    prejudice arising from the delay. See Devin, 918 F.2d at 290
    ___ _____

    (refusing to reverse conviction where delayed disclosure of

    impeachment material "had no effect on the outcome of the

    trial"); Ingraldi, 793 F.2d at 411-12 (stating that the critical
    ________

    test "is whether defendant's counsel was prevented by the delay

    from using the disclosed material effectively in preparing and

    presenting the defendant's case"). Here, however, the defense's

    delayed receipt of the report did not hinder cross-examination to

    any appreciable degree. From the start of trial, appellants had

    a sizeable storehouse of data concerning Perez's checkered past.

    In comparison to what was already known, the report, which

    yielded a relatively inconsequential amount of incremental

    information, comprised small potatoes. Moreover, the timing of

    events minimized the possibility of prejudice. Appellants

    received the report while Perez was still testifying. They were

    able to incorporate its contents into their cross-examination and

    employ the information effectively. For aught that appears, the


    23














    course and outcome of the trial would have been the same no

    matter when the report surfaced.

    In our view, the presider's decision to allow a

    criminal case to go forward, notwithstanding delayed disclosure

    of material relevant to impeachment of a witness, should be

    upheld unless a manifest abuse of discretion looms. See Devin,
    ___ _____

    918 F.2d at 289. On this record, we can neither criticize the

    district court's exercise of its informed discretion nor tamper

    with the court's bipartite finding that the government violated

    no duty and that, in any event, appellants sustained no

    cognizable prejudice arising out of the presentence report's

    belated emergence.

    B. Denied Discovery.
    B. Denied Discovery.
    ________________

    Appellants also complain that the court below, after

    scrutinizing certain materials in camera, denied their motion to
    __ ______

    compel discovery. The materials in question consist of various

    police files, including interview notes. We have reviewed these

    materials and agree with the lower court that they are outside

    the purview of the Jencks Act, 18 U.S.C. 3500, for two reasons.

    First, to be discoverable under the Jencks Act, a government

    record of a witness interview must be substantially a verbatim

    account. See United States v. Newton, 891 F.2d 944, 953-54 (1st
    ___ _____________ ______

    Cir. 1989). Second, the account must have been signed or

    otherwise verified by the witness himself. See United States v.
    ___ _____________

    Gonzalez-Sanchez, 825 F.2d 572, 586-87 (1st Cir.), cert. denied,
    ________________ _____ ______

    484 U.S. 989 (1987). The police files at issue here, including


    24














    the interview notes, do not meet either of these guidelines and

    are, therefore, non-discoverable. A fortiori, the district court
    _ ________

    did not blunder in denying access to them.

    V. COCONSPIRATORS' STATEMENTS
    V. COCONSPIRATORS' STATEMENTS

    During the course of trial, the judge allowed several

    witnesses to attribute out-of-court statements to one or more

    declarants, finding, inter alia, that the declarants were
    _____ ____

    coconspirators. Appellants assign error.

    Although out-of-court statements made by non-testifying

    declarants ordinarily are excluded as hearsay if offered to prove

    the truth of the matter asserted, see Fed. R. Evid. 801(c), there
    ___

    are exceptions to the rule. One such exception provides that "a

    statement by a coconspirator of a party during the course and in

    furtherance of the conspiracy" is not hearsay. Fed. R. Evid

    801(d)(2)(E). To invoke the exception, a party who wants to

    introduce a particular statement must show by a preponderance of

    the evidence that a conspiracy embracing both the declarant and

    the defendant existed, and that the declarant uttered the

    statement during and in furtherance of the conspiracy. See
    ___

    Bourjaily v. United States, 483 U.S. 171, 175-76 (1987); Ortiz,
    _________ _____________ _____

    966 F.2d at 714-15. The party at whom the evidence is aimed must

    object to the statement when it is offered; and, if the district

    court accepts the evidence de bene, must then ask the court at
    __ ____

    the close of all the relevant evidence to strike the statement,

    i.e., to consider whether the proponent fulfilled the requisite
    ____

    foundational requirements by a preponderance of the evidence.


    25














    See Ortiz, 966 F.2d at 715; United States v. Perkins, 926 F.2d
    ___ _____ _____________ _______

    1271, 1283 (1st Cir. 1991); see generally United States v.
    ___ _________ ______________

    Ciampaglia, 628 F.2d 632, 638 (1st Cir.), cert. denied, 449 U.S.
    __________ _____ ______

    956 (1980); United States v. Petrozziello, 548 F.2d 20, 23 n.3
    _____________ ____________

    (1st Cir. 1977).

    On five occasions, at least one defendant objected to

    testimony anent coconspirators' out-of-court statements.11 We

    treat these objections as fully preserved after all, the

    district court told counsel that it deemed an objection by one

    defendant sufficient to preserve the rights of all defendants

    and, accordingly, we plumb the record in an effort to determine

    whether any or all of the district court's rulings with respect

    to these statements were clearly erroneous. See United States v.
    ___ _____________

    McCarthy, 961 F.2d 972, 977 (1st Cir. 1992); United States v.
    ________ ______________

    Cresta, 825 F.2d 538, 551 (1st Cir. 1987), cert. denied, 486 U.S.
    ______ _____ ______

    1042 (1988).

    We begin by considering three pieces of testimony

    recounting out-of-court statements. The common thread that joins

    these proffers is that the government adduced some other evidence

    tending to prove that the declarants were, in fact,

    coconspirators. We then address two pieces of testimony that are

    not cushioned in a comparable fashion.

    A. Supported Statements.
    A. Supported Statements.
    ____________________


    ____________________

    11On a sixth occasion, defendant Driesse objected to another
    statement. Inasmuch as that statement implicated Driesse alone,
    we regard the ensuing assignment of error as beyond the scope of
    this opinion. See supra note 2.
    ___ _____

    26














    1. Milne Testimony. Milne (a self-confessed
    1. Milne Testimony.
    ________________

    coconspirator) served as the wellspring of the first statement.

    He testified that a defendant, Edward Welch, told him that the

    police noticed cocaine on his (Welch's) bed in the course of

    executing a search warrant. The district court found that the

    declarant, Welch, was a coconspirator, and that Welch's statement

    was made during and in furtherance of the conspiracy. The

    finding is fully sustainable.

    Both Coriaty and Milne testified that Welch sold them

    cocaine he had purchased from David Sepulveda (an arrangement

    that numerous other witnesses corroborated). This evidence

    encourages, if it does not demand, the conclusion that Welch

    worked hand in glove with Sepulveda. A pattern of drug sales

    between two individuals, looking toward resale to third persons,

    together with appropriate contextual detail, can support a

    finding that the two individuals were jointly involved in a drug-

    trafficking conspiracy. See United States v. Moran, 984 F.2d
    ___ _____________ _____

    1299, 1303 (1st Cir. 1993); United States v. Glenn, 828 F.2d 855,
    _____________ _____

    857-58 (1st Cir. 1987). The record likewise justifies the

    conclusion that Welch's statements to Milne were made during and

    in furtherance of the conspiracy. We think it is common ground

    and common sense that the reporting of significant events by

    one coconspirator to another advances the conspiracy. See United
    ___ ______

    States v. Smith, 833 F.2d 213, 219 (10th Cir. 1987).
    ______ _____

    2. Rice Testimony. Another government witness, John
    2. Rice Testimony.
    _______________

    Rice, testified that one defendant, Driesse, mentioned that a


    27














    second defendant, Rood, sold cocaine for the Sepulveda brothers.

    The jury found both Driesse and Rood guilty of the conspiracy

    charge, and the record gives considerable definition to both

    men's links to the drug ring. And, moreover, since the sharing

    of pertinent information about a conspiracy's mode of operation

    furthers the conspiratorial ends, see United States v. Munson,
    ___ _____________ ______

    819 F.2d 337, 341 (1st Cir. 1987), Driesse's statement concerning

    drug sales assisted the charged conspiracy by informing other

    coconspirators of Rood's role and activities.

    3. Malone Testimony. A third statement came in
    3. Malone Testimony.
    ________________

    through a police officer, Kathy Malone, who made a number of

    undercover buys from Sepulveda-supplied vendors. She testified

    that David Sepulveda's inamorata, Bambi Burley, told her that she

    (Bambi) had jilted Sepulveda and asked whether Malone might be

    "one of those girls that went to New York with him." Appellants

    challenge the admission of this statement on the sole ground that

    Burley, herself, was a stranger to the charged conspiracy.

    However, this challenge overlooks Perez's testimony that he

    collected drug debts for David Sepulveda and delivered the money

    to Burley. While there is hardly a profusion of evidence

    depicting Burley as a coconspirator, there is enough to withstand

    clear error review.12


    ____________________

    12It seems problematic whether these statements furthered
    the conspiracy. We need not mull this question, however, as
    appellants did not advance this ground either in the lower court
    or in their briefs. The issue is, therefore, waived. See United
    ___ ______
    States v. Slade, 980 F.2d 27, 31 (1st Cir. 1992). In all events,
    ______ _____
    the statements seem harmless.

    28














    B. Unsupported Statements.
    B. Unsupported Statements.
    ______________________

    The two additional instances in which the court below

    admitted statements under the coconspirator exception despite

    contemporaneous objection are qualitatively different. In each

    instance, there appears to be no record evidence, other than the

    statement itself, to support its admissibility.

    One statement arose during the government's examination

    of a police detective, Mark Putney. The detective testified

    that, while executing a search warrant at a dwelling occupied by

    defendant Cheryl Johnson and her husband, Brian, he answered the

    telephone:

    The male caller asked if Brian was home. I
    stated I was Brian. The caller stated did
    you pick up the stuff. I said I did. The
    caller asked if he could come over and pick
    up a half. I stated sure, come on over.

    The other statement occurred during direct examination

    of Joseph Baranski. Baranski testified that he sometimes

    provided transportation for people going to David Sepulveda's

    house and that, on occasion, his passengers would tell him that

    they were visiting Sepulveda because "they wanted to buy some

    drugs."

    Our review of the record has deterrated no extrinsic

    evidence tending to show that these out-of-court declarants (the

    unidentified caller to the Johnson residence and the unidentified

    passengers in Baranski's vehicle) were involved in the

    conspiracy, and the government has directed us to no such proof.

    Following the Supreme Court's landmark opinion in Bourjaily, and
    _________


    29














    Justice Stevens's concurrence, 483 U.S. at 185 & n.2, several of

    our sister circuits have concluded that the preponderance of

    evidence required for the introduction of an out-of-court

    statement under Rule 801(d)(2)(E) must necessarily comprise more

    than the weight of the statement itself. See, e.g., United
    ___ ____ ______

    States v. Gambino, 926 F.2d 1355, 1361 n.5 (3d Cir.), cert.
    ______ _______ _____

    denied, 112 S. Ct. 415 (1991); United States v. Garbett, 867 F.2d
    ______ _____________ _______

    1132, 1134 (8th Cir. 1989); United States v. Silverman, 861 F.2d
    _____________ _________

    571, 577 (9th Cir. 1988); United States v. Zambrana, 841 F.2d
    _____________ ________

    1320, 1344-45 (7th Cir. 1988); see also United States v. Daly,
    ___ ____ _____________ ____

    842 F.2d 1380, 1386 (2d Cir.), cert. denied, 488 U.S. 821 (1988).
    _____ ______

    We have not yet spoken to the point. See, e.g., United States v.
    ___ ____ _____________

    Dworken, 855 F.2d 12, 25 (1st Cir. 1988) (deferring resolution).
    _______

    This case presents the issue squarely and requires that

    we decide it. We hold that a coconspirator's statement, standing

    alone, is insufficient to meet the preponderance standard of Rule

    801(d)(2)(E). In other words, to satisfy the weight-of-the-

    evidence criteria for that hearsay exception, there must be some

    proof aliunde. Though the district court may consider a
    _______

    statement's contents and the circumstances attending its

    utterance when gauging the statement's reliability, see United
    ___ ______

    States v. Gomez-Pabon, 911 F.2d 847, 856 n.3 (1st Cir. 1990),
    ______ ___________

    cert. denied, 498 U.S. 1074 (1991), admitting the statement into
    _____ ______

    evidence requires some extrinsic proof of the declarant's

    involvement in the conspiracy. Thus, because the government

    developed no independent evidence of who Brian Johnson's callers


    30














    or Joseph Baranski's passengers might have been, or what their

    status might have been vis-a-vis the charged conspiracy, the

    statements were improperly admitted under the coconspirator

    exception to the hearsay rule.13

    There is no bright-line rule for divining when

    particular errors that result in a jury's exposure to improper

    evidence are (or are not) harmless. Rather, a harmlessness

    determination demands a panoramic, case-specific inquiry

    considering, among other things, the centrality of the tainted

    material, its uniqueness, its prejudicial impact, the uses to

    which it was put during the trial, the relative strengths of the

    parties' cases, and any telltales that furnish clues to the

    likelihood that the error affected the factfinder's resolution of

    a material issue. Gearing our inquiry along these lines, we

    conclude that the errors in admitting the statements are benign.

    The telephone talk concerned a peripheral matter, for Brian

    Johnson was not on trial. Furthermore, several witnesses

    testified at first hand that his wife and housemate, appellant

    Cheryl Johnson, trafficked in cocaine. See supra Part II(D).
    ___ _____

    The passengers' remarks constituted cumulative evidence. They


    ____________________

    13We do not mean to imply that the evidence might not have
    been introduced for some other purpose. Suppose, for example,
    that the telephone calls Putney received were not offered to show
    that someone in fact sought to buy drugs from Brian Johnson, but,
    rather, to show the types of telephone calls the Johnsons
    received. If admissible on that basis, the statements would not
    be excludable as hearsay. See Fed. R. Evid. 801(c); see also
    ___ ___ ____
    United States v. Green, 887 F.2d 25, 27 (1st Cir. 1989)
    ______________ _____
    (upholding admission of out-of-court statement to show motive,
    not for the truth of the matter asserted).

    31














    inculpated only David Sepulveda, and a googol of witnesses tabbed

    Sepulveda as a large-scale narcotics distributor who made

    countless cocaine sales. Several of these witnesses swore that

    they personally purchased drugs from him. Against this tidal

    wave of evidence, Baranski's testimony was a drop in the

    proverbial bucket. Because the record offers every assurance

    that the errant statements did not affect the trial's outcome,

    they were harmless.14 See United States v. Ladd, 885 F.2d 954,
    ___ _____________ ____

    957-58 (1st Cir. 1989); Dworken, 855 F.2d at 26.
    _______

    VI. EXPERT TESTIMONY
    VI. EXPERT TESTIMONY

    At trial, the government's case culminated in the

    testimony of Commander Richard Gerry of the New Hampshire Drug

    Task Force. Before Commander Gerry testified, the prosecutor

    told the court that Gerry's views would be based upon the trial

    testimony and his experience as a police officer, and predicted

    that Gerry would "explain to the jury how the quantities of drugs

    . . . referred to in the . . . testimony at trial [were] used and

    distributed . . . from the business aspect." Based on this

    representation, the court denied appellants' motion in limine and
    __ ______

    permitted the witness to testify.

    ____________________

    14Appellants also assign error to four statements that were
    admitted without objection. Absent a showing of plain error, the
    failure to object below is fatal to claims that particular
    evidence should not have reached the jury. See Ortiz, 966 F.2d
    ___ _____
    at 715; Perkins, 926 F.2d at 1283; see also Fed. R. Evid. 103(a).
    _______ ___ ____
    We find no plain error in connection with the admission of the
    four statements; their introduction, whether viewed singly or in
    combination, did not "seriously affect the fundamental fairness
    and basic integrity of the [trial]," United States v. Griffin,
    _____________ _______
    818 F.2d 97, 100 (1st Cir.), cert. denied, 484 U.S. 844 (1987),
    _____ ______
    or otherwise impair appellants' substantial rights.

    32














    In the initial stages, the testimony went according to

    plan: Commander Gerry discussed the ways in which drug dealers

    commonly package their products and reviewed the economics of the

    cocaine trade (illustrating the profit to be gained by buying and

    selling in various quantities). Despite this promising start,

    matters soon deteriorated. Although Commander Gerry offered

    opinions as to appellants' roles in the enterprise,

    characterizing David Sepulveda as "top dog" and the others as

    rank-and-file members of the organization, cross-examination

    revealed that these opinions were less the fruit of an expert

    mind attuned to the testimony in the case than the yield of

    undifferentiated conversations over the years with unidentified

    police officers regarding Sepulveda and his associates. So

    ingrained were the roots of Commander Gerry's opinions that he

    was unable to specify the sources of his information or, in the

    end, articulate a plausible basis for his views. The speculative

    nature of Gerry's testimony became starkly apparent when the

    defense established that he had heard only bits and pieces of the

    testimony in the case. These rather startling insights cast

    grave doubt upon both the adequacy of the foundation on which

    Gerry's testimony rested and the existence of a fair opportunity

    for effective cross-questioning.

    Midway through cross-examination the defense moved to

    strike the expert's testimony in toto. The district court
    __ ____

    granted the motion. We think the defects in the expert's

    presentation warranted this step. Fed. R. Evid. 705 provides in


    33














    pertinent part that an expert witness "may . . . be required to

    disclose [on cross-examination] the underlying facts or data" on

    which his opinions rest. If cross-examination reveals that the

    opinions advanced by an expert rest on a wholly inadequate

    foundation, the judge, on timely motion, may strike the

    testimony. See, e.g., United States v. Scop, 846 F.2d 135, 142-
    ___ ____ _____________ ____

    43 (2d Cir. 1988); Benjamin v. Peter's Farm Condo. Owners Ass'n,
    ________ ________________________________

    820 F.2d 640, 641 (3d Cir. 1987); see also 3 David W. Louisell et
    ___ ____

    al., Federal Evidence 400, at 709-10 (1979).
    ________________

    The district judge also told the jury to disregard the

    offending testimony "entirely." His instruction was firm, clear,

    and to the point. Appellants neither objected to its form nor

    sought to have the judge improve upon it. The next day, however,

    appellants moved for a mistrial. The judge denied the motion.

    On appeal, appellants lament the denial of both their original

    motion in limine and their subsequent motion for a mistrial.
    __ ______

    A. The Motion in Limine.
    A. The Motion in Limine.
    ____________________

    The admission of expert testimony is governed by Fed.

    R. Evid. 702, which authorizes the district court to admit such

    testimony if, and to the extent that, it will "assist the trier

    of fact to understand the evidence or to determine a fact in

    issue . . . ." Id. Because gauging an expert witness's
    ___

    usefulness is almost always a case-specific inquiry, the law

    affords trial judges substantial discretion in connection with

    the admission or exclusion of opinion evidence. See Apostol v.
    ___ _______

    United States, 838 F.2d 595, 599 (1st Cir. 1988); United States
    _____________ _____________


    34














    v. Hoffman, 832 F.2d 1299, 1310 (1st Cir. 1987); see also 3 Jack
    _______ ___ ____

    Weinstein & Margaret A. Berger, Weinstein's Evidence 702[02] at
    ____________________

    702-22 to 702-23 (1993). It follows that a trial judge's rulings

    in this sphere should be upheld "unless manifestly erroneous."

    Salem v. United States Lines Co., 370 U.S. 31, 35 (1962); see
    _____ ________________________ ___

    also Hoffman, 832 F.2d at 1310 (explaining that "the district
    ____ _______

    court's assessment of what will or will not assist the jury is

    entitled to considerable deference in the Rule 702 milieu").

    Given the government's preliminary proffer, there was

    no need for outright exclusion of the anticipated testimony. The

    Supreme Court has recently reaffirmed that when a party proffers

    an expert, the trial judge performs a gatekeeping function,

    determining whether it is reasonably likely that the expert

    possesses specialized knowledge which will assist the trier

    better to understand a fact in issue. See Daubert v. Merrell Dow
    ___ _______ ___________

    Pharmaceuticals, Inc., 113 S. Ct. 2786, 2796 (1993). The
    _____________________

    witness's opinions need "not [be] based on first-hand knowledge

    or observation." Id. at 2796.
    ___

    Seen in light of these authorities, the district court

    had a reasonable basis for allowing the expert to testify. If

    Commander Gerry's pedagogy proved to be as advertised, his

    testimony arguably would have assisted the jury in understanding

    the voluminous evidence that had emerged. Experienced

    investigators are commonly permitted to testify as experts on

    topics such as the structure of a criminal enterprise, the

    economics of the drug trade, and the handling of contraband.


    35














    See, e.g., United States v. Angiulo, 897 F.2d 1169, 1188-89 (1st
    ___ ____ _____________ _______

    Cir.) (allowing veteran FBI agent to offer opinions, based mainly

    on information presented at trial, about defendants' roles in

    gambling ring), cert. denied, 498 U.S. 845 (1990); Ladd, 885 F.2d
    _____ ______ ____

    at 959 (allowing experienced police officer to testify about

    methods of packaging and processing heroin, and relationship to

    distribution venture); United States v. Angiulo, 847 F.2d 956,
    _____________ _______

    973-75 (1st Cir.) (allowing suitably credentialed agent to offer

    expert opinions about structure and operation of La Cosa Nostra,

    including defendants' relationships to that organization), cert.
    _____

    denied, 488 U.S. 928 (1988); Hoffman, 832 F.2d at 1310 (allowing
    ______ _______

    knowledgeable federal agent to testify as an expert on the

    practices and idiom of the cocaine community).

    In sum, the lower court's denial of the motion in
    __

    limine cannot be faulted. The unhappy fact that, in hindsight,
    ______

    the expert turned out to be a dud does not retroactively negate

    the lawfulness of the court's original ruling. Trial judges,

    whose lot is often to make swift battlefield decisions on tangled

    evidentiary matters, cannot be expected to foretell the future

    with absolute accuracy.15

    B. The Motion for Mistrial.
    B. The Motion for Mistrial.
    _______________________

    ____________________

    15When uncertainty attends a proffer of opinion evidence,
    voir dire screenings are standard fare. See, e.g., Tokio Marine
    ____ ____ ___ ____ ____________
    & Fire Ins. Co. v. Grove Mfg. Co., 958 F.2d 1169, 1175 & n.4 (1st
    _______________ ______________
    Cir. 1992); Freeman v. Package Mach. Co., 865 F.2d 1331, 1337
    _______ _________________
    (1st Cir. 1988); cf. United States v. Griffin, 818 F.2d 97, 105
    ___ ______________ _______
    (1st Cir.) (discussing utility of voir dire in an analogous
    ____ ____
    context), cert. denied, 484 U.S. 844 (1987). But although
    _____ ______
    appellants moved in limine to forfend Gerry's testimony, they
    __ ______
    apparently never sought permission to conduct a voir dire.
    ____ ____

    36














    Appellants' next assignment of error presents a

    slightly closer question. Although the district court struck

    Commander Gerry's half-completed testimony and told the jurors to

    disregard what they had heard, appellants assert that the court

    erred in refusing to grant a mistrial. At the core of

    appellants' argument lies their insistence that the judge did no

    more than hold a farthing candle to the sun; once Gerry's views

    were aired, words from the bench, no matter how stentorian the

    judge's tone, could not exorcise the resultant prejudice.

    Granting or denying a motion for a mistrial is a matter

    committed to the trial court's discretion. See De Jongh, 937
    ___ _________

    F.2d at 3; United States v. Chamorro, 687 F.2d 1, 6 (1st Cir.),
    ______________ ________

    cert. denied, 459 U.S. 1043 (1982). The exercise of that
    _____ ______

    discretion always must be informed by the circumstances of the

    particular case. When, as now, a motion to declare a mistrial

    has its genesis in a claim that improper evidence came before the

    jury, the court must first weigh the claim of impropriety and, if

    that claim is well founded, strike the offending evidence. Next,

    unless the court believes that the evidence is seriously

    prejudicial and that a curative instruction will be an

    insufficient antidote, the court should proceed with the trial

    after instructing the jury to disregard the evidence. Declaring

    a mistrial is a last resort, only to be implemented if the taint

    is ineradicable, that is, only if the trial judge believes that

    the jury's exposure to the evidence is likely to prove beyond

    realistic hope of repair.


    37














    In this instance, Judge Devine followed the standard

    paradigm as closely as possible, considering appellants' delay in

    offering the mistrial motion. Three factors persuade us that he

    handled the situation in an appropriate manner. First, courts

    have long recognized that, within wide margins, the potential for

    prejudice stemming from improper testimony or comments can be

    satisfactorily dispelled by appropriate curative instructions.

    See, e.g., United States v. Figueroa, 900 F.2d 1211, 1216 (8th
    ___ ____ _____________ ________

    Cir.), cert. denied, 496 U.S. 942 (1990); United States v.
    _____ ______ ______________

    Ferreira, 821 F.2d 1, 5-6 (1st Cir. 1987); United States v.
    ________ _____________

    Cirrincione, 780 F.2d 620, 635 (7th Cir. 1985). The instructions
    ___________

    given here pass the test of appropriateness; indeed, appellants

    have not suggested any way in which they might have been

    improved.

    Second, Judge Devine did not allow sores to fester.

    Rather, he halted Commander Gerry's testimony in midstream and

    instructed the jurors to discard the faulty evidence. Swiftness

    in judicial response is an important element in alleviating

    prejudice once the jury has been exposed to improper testimony.

    See, e.g., United States v. Pryor, 960 F.2d 1, 2-3 (1st Cir.
    ___ ____ ______________ _____

    1992); United States v. Hernandez, 891 F.2d 521, 523 (5th Cir.
    ______________ _________

    1989), cert. denied, 495 U.S. 909 (1990). In this case, the
    _____ ______

    judge could scarcely have acted more celeritously.

    Third, appellate courts inquiring into the

    effectiveness of a trial judge's curative instructions should

    start with a presumption that jurors will follow a direct


    38














    instruction to disregard matters improvidently brought before

    them. See United States v. Olano, 113 S. Ct. 1770, 1781 (1993);
    ___ _____________ _____

    Richardson, 481 U.S. at 206. Though rebuttable, the presumption
    __________

    endures unless it appears probable that, in a particular case,

    responsible jurors will not be able to put the testimony to one

    side, and, moreover, that the testimony will likely be seriously

    prejudicial to the aggrieved party. See United States v. Paiva,
    ___ _____________ _____

    892 F.2d 148, 160 (1st Cir. 1989) (collecting cases).

    Read as a whole, Commander Gerry's partially completed

    testimony does not strike us as so compelling that its impact

    would linger even after the court's stern admonition. The

    testimony is virtually indistinguishable from the vast array of

    other evidence introduced by the prosecution, and, therefore, it

    is of the cumulative vintage.16 We have routinely found

    cumulative evidence impotent when accidentally uncorked. See,
    ___

    e.g., United States v. Ellis, 935 F.2d 385, 393 (1st Cir.), cert.
    ____ _____________ _____ _____

    denied, 112 S. Ct. 201 (1991); United States v. Morris, 700 F.2d
    ______ _____________ ______

    427, 431 (1st Cir.), cert. denied, 461 U.S. 947 (1983). So it is
    _____ ______

    here. Appellants have not successfully rebutted the presumption

    that the jury heeded the judge's instructions.

    In a last-ditch effort to save the day, appellants come

    at the question of undue prejudice from a slightly more oblique

    ____________________

    16It is, perhaps, worth noting that the only defendant
    discussed in any detail by the witness was David Sepulveda a
    defendant as to whom the prosecution adduced overwhelming
    evidence of guilt. We add that, although there were different
    quanta of evidence as to each defendant, a painstaking review of
    the record inspires confidence that Gerry's testimony had no
    significant spillover effect vis-a-vis other defendants.

    39














    angle. They allege that the government's questioning of

    Commander Gerry went so far beyond the limits of propriety that

    putting him on the witness stand amounted to prosecutorial

    misconduct. But the record simply does not support this

    accusation. The government had a reasonable basis for offering

    Gerry as an expert witness. Although the decision did not pan

    out, that is no reason to consign either the prosecutor or the

    prosecution to the juridical equivalent of philotheoparoptesism.

    Like judges, prosecutors cannot be held to a standard of utter

    prescience.17

    For these reasons, we discern no abuse of discretion in

    either the district court's initial admission of Commander

    Gerry's testimony or the court's refusal to declare a mistrial

    after the necessity to strike the testimony arose. In a

    nutshell, there was no reason to believe that the infelicitously

    offered evidence remained in the jurors' minds after it was

    banished from the case, and, consequently, no need for the court

    to jettison the baby when the bath water turned tepid.



    VII. CLOSING ARGUMENT
    VII. CLOSING ARGUMENT

    Appellants contend that the prosecutors' comments

    ____________________

    17Moreover, if blame is to be assigned, appellants must
    share in it. They could have, but did not, ask for a voir dire.
    ____ ____
    See supra note 15. A party who elects not to request voir dire
    ___ _____ ____ ____
    of an opponent's expert runs certain risks. When a predictable
    risk materializes, there is little incentive for courts to be
    sympathetic. Cf., e.g., Paterson-Leitch Co. v. Massachusetts
    ___ ____ ___________________ _____________
    Mun. Wholesale Elec. Co., 840 F.2d 985, 989 (1st Cir. 1988)
    __________________________
    ("Courts, like the Deity, are most frequently moved to help those
    who help themselves.").

    40














    during closing argument constituted reversible error because some

    statements spotlighted appellants' joint decision not to testify

    and others unfairly inflamed the jury's passions.18 Although

    these contentions are obviously related, we analyze them

    separately.

    A. Comments on Defendants' Silence.
    A. Comments on Defendants' Silence.
    _______________________________

    We begin with bedrock. The Fifth Amendment forbids any

    comment by the prosecutor on the defendant's exercise of the

    right to remain silent. See United States v. Robinson, 485 U.S.
    ___ _____________ ________

    25, 30 (1988); Griffin v. California, 380 U.S. 609, 615 (1965).
    _______ __________

    The proposition is more easily stated than applied. There is no

    bright line marking the precipice between a legitimate assessment

    of defense witnesses and an impermissible encroachment upon the

    accused's silence. Prosecutors who choose to explore such rugged

    terrain must take particular care not to comment upon, or call

    the jury's attention to, a defendant's failure to take the

    witness stand. See United States v. Lavoie, 721 F.2d 407, 408
    ___ _____________ ______

    (1st Cir. 1983), cert. denied, 465 U.S. 1069 (1984); Rodriguez-
    _____ ______ __________

    Sandoval v. United States, 409 F.2d 529, 531 (1st Cir. 1969).
    ________ _____________

    Nonetheless, the road runs in both directions, leading

    to a rough mutuality of obligation. Defense attorneys have a

    responsibility to exercise reasonable vigilance and direct the

    trial court's immediate attention to perceived trespasses. See
    ___

    generally Ortiz, 966 F.2d at 715 (pointing out that "attorneys
    _________ _____

    ____________________

    18We use "prosecutors" in the plural because one government
    attorney delivered the initial summation and another handled
    rebuttal.

    41














    must usually bear the responsibility for preserving their

    points"); United States v. Griffin, 818 F.2d 97, 100 (1st Cir.)
    _____________ _______

    (discussing the "obligation to alert the district judge to error-

    in-the-making"), cert. denied, 484 U.S. 844 (1987). Although
    _____ ______

    excessive summations may on rare occasions constitute plain

    error, redressable after the fact notwithstanding the absence of

    a contemporaneous objection, see, e.g., Arrieta-Agressot v.
    ___ ____ ________________

    United States, 3 F.3d 525, 528 (1st Cir. 1993), a criminal
    ______________

    defendant who believes that a prosecutor's closing argument goes

    too far must usually object to the offending statements when and

    as they are uttered. See id. In this way, the prosecution can
    ___ ___

    clarify ambiguities and correct mislocutions in a timely manner,

    and, if necessary, the trial judge can administer an immediate

    antidote, thereby curtailing any damage.

    None of the appellants chose to testify at trial. Yet,

    the prosecutors courted trouble in both segments of their closing

    argument. Initially, one of them asked rhetorically:

    Did anyone come into this courtroom and say
    what the Government witnesses told you didn't
    happen? Did they? They attacked the
    witnesses, the DEA, the police officers, [and
    the government attorneys]. . . .

    On rebuttal, her colleague expanded upon (and twice repeated) the

    same theme:

    The United States introduced a lot of
    evidence during this trial, a lot of facts.
    And for the most part, there is no evidence
    in this case to show that what our witnesses
    said happened did not happen. That is, the
    defendants have done little or nothing to
    refute that evidence.


    42














    * * *

    Ladies and gentlemen, we stand on the
    evidence, the overwhelming evidence, the
    evidence which, for the most part, the
    defendants have done absolutely nothing to
    refute . . . .

    It was only after the jury had been dismissed for the day that

    appellants, having sat silently throughout both segments of the

    prosecutors' summations, moved for a mistrial based in part on

    the quoted statements. The trial court denied the motion as

    untimely and sent the case to the jury the next morning. In the

    course of the charge, Judge Devine stated on five separate

    occasions that the government was responsible for carrying the

    burden of proof, that the defendants had the right to remain

    silent, and that no inferences might be drawn from the

    defendants' election not to testify.19

    In assaying the appropriateness of a prosecutor's

    remarks, context frequently determines meaning. See, e.g.,
    ___ ____

    United States v. Young, 470 U.S. 1, 11 (1985); United States v.
    _____________ _____ _____________

    Akinola, 985 F.2d 1105, 1111 (1st Cir. 1993); United States v.
    _______ ______________

    Lilly, 983 F.2d 300, 307 (1st Cir. 1992). Once the prosecutor's
    _____

    words are placed in context, we inquire whether "the language

    used was manifestly intended or was of such character that the

    jury would naturally and necessarily take it to be a comment on

    ____________________

    19To be sure, the judge did not specifically direct the jury
    to disregard the comments quoted above. Yet, appellants neither
    sought such an instruction nor objected to its absence. A trial
    court's failure to launch a limiting instruction sua sponte is
    ___ ______
    not reversible error. See, e.g., United States v. De La Cruz,
    ___ ____ _____________ __________
    902 F.2d 121, 134 (1st Cir. 1990); Rivera-Santiago, 872 F.2d at
    _______________
    1083.

    43














    the failure of the accused to testify." United States v. Glantz,
    _____________ ______

    810 F.2d 316, 322 (1st Cir.) (citations omitted), cert. denied,
    _____ ______

    482 U.S. 929 (1987); see also Lilly, 983 F.2d at 307.20 In
    ___ ____ _____

    borderline cases, the standard of review can figure importantly.

    When no contemporaneous objection appears of record, appellate

    review is for plain error. See Arrieta-Agressot, 3 F.3d at 528;
    ___ ________________

    United States v. Smith, 982 F.2d 681, 682 (1st Cir. 1993); see
    _____________ _____ ___

    also Fed. R. Crim. P. 52(b). And in the absence of a
    ____

    contemporaneous objection it seems fair to give the arguer the

    benefit of every plausible interpretation of her words. See
    ___

    United States v. Donlon, 909 F.2d 650, 656-57 (1st Cir. 1990);
    _____________ ______

    Glantz, 810 F.2d at 323; cf. Robinson, 485 U.S. at 31 (noting
    ______ ___ ________

    that counsel's failure to object contemporaneously suggests that

    the arguer's statement is not ambiguous).

    In this case, the prosecutors' remarks, taken in

    context and at face value, do not appear to constitute a comment

    on the accuseds' silence. The government's closing argument

    recounted the evidence against each defendant and, while

    admitting that certain prosecution witnesses possessed unsavory

    reputations and might profit by cooperation, the prosecutors

    urged the jury to find that those witnesses testified truthfully.

    Not surprisingly, defense counsels' summations played up the


    ____________________

    20In this case, the district court apparently did not
    believe that the prosecutors intended the statements as a
    reflection on the defendants' failure to testify and appellants
    have not imputed so malign a motive to the prosecution team. We
    focus, therefore, on what the jury might have taken the
    statements to imply.

    44














    credibility theme, systematically besmirching the reliability of

    the government's witnesses, stressing internal inconsistencies,

    and outlining perceived conflicts between the testimony of

    different witnesses. Throughout, counsel paraded the cooperating

    witnesses' criminal records past the jury and made much of what

    those witnesses stood to gain by currying favor with the

    authorities.

    Visualized against this backdrop, and assigning

    ordinary words their most natural meaning, the prosecution's

    argument that the defense had not successfully rebutted

    incriminating evidence seems not to be a comment on appellants'

    failure to testify but a comment about the credibility of the

    government's case. Arguments of this stripe do not trespass upon

    the accused's right to remain silent. See Lockett v. Ohio, 438
    ___ _______ ____

    U.S. 586, 595 (1978) (finding remarks that evidence was

    "unrefuted" and "uncontradicted" not to violate the Fifth

    Amendment); see also United States v. Pitre, 960 F.2d 1112, 1124
    ___ ____ _____________ _____

    (2d Cir. 1992) (upholding a prosecutor's comment that defendant

    had offered no competing explanation); United States v. Castillo,
    _____________ ________

    866 F.2d 1071, 1083 (9th Cir. 1988) (upholding a prosecutor's

    remark about defendant's failure to rebut evidence); United
    ______

    States v. Borchardt, 809 F.2d 1115, 1119 (5th Cir. 1987)
    ______ _________

    (similar). Within the bounds of fair play and due process,

    prosecutors are not barred from making powerful arguments.

    To be sure, it is conceivable that a juror hearing the

    prosecutors' words might have interpreted them as a commentary on


    45














    appellants' joint decision not to testify. But we cannot decide

    this case based on what amounts to a doomsday scenario. After

    all, an appellate court is not at liberty to "infer that a

    prosecutor intends an ambiguous remark to have its most damaging

    meaning or that a jury, sitting through lengthy exhortation, will

    draw that meaning from the plethora of less damaging

    interpretations." Lilly, 983 F.2d at 307 (citation omitted); see
    _____ ___

    also Robinson, 485 U.S. at 31 (explaining "that an appellate
    ____ ________

    court may [not] substitute its reading of ambiguous language for

    that of the trial court"). We are particularly unwilling to fish

    in the pool of ambiguity where the defendants did not

    contemporaneously object or otherwise bring the district court's

    attention to any potentially harmful circumlocution during the

    summations. Hence, we rule that the prosecutors' lack-of-

    refutation references did not require a mistrial.

    B. Inflammatory Statements.
    B. Inflammatory Statements.
    _______________________

    The second half of appellants' challenge to the

    government's final argument implicates what appellants

    characterize as four attempts to inflame the jury, viz., the
    ____

    prosecutors' suggestion that the jury could consider the effect

    on the community should the Sepulveda organization be able to

    continue in business;21 two references to the "war on

    ____________________

    21The first prosecutor argued, inter alia:
    _____ ____

    We put this organization out of business.
    And it's up to you to decide that it stays
    that way. Because ask yourselves, the
    business practices of this organization, this
    organized group of drug dealers, what

    46














    drugs";22 and a monition that feelings of pity should be

    subordinated to the call of civic duty.23 Because defendants

    failed to object to these remarks when they were voiced, we

    review them only for plain error. See Smith, 982 F.2d at 682.
    ___ _____

    Under that regime, we are constrained to stay our hand unless

    improper remarks "so poisoned the well that the trial's outcome

    ____________________

    practices will be allowed to continue in the
    streets of Manchester and the surrounding
    towns of New Hampshire if these people are
    allowed or permitted to revive the drug ring
    . . . .

    22In rebuttal argument, the second prosecutor stated:

    It's a sad but true fact of law enforcement,
    particularly of this war on drugs, that if
    you're going to try to clean out the sewers,
    you've got to roll up your sleeves and get
    down in with the filth, and, ladies and
    gentlemen, I, for one, am proud to have gone
    down into those sewers and I'm proud to have
    been part of this prosecution team and I'm
    proud to be a small part of this war on
    drugs.

    23In rebuttal, the second prosecutor also suggested:

    [I]f perhaps you do feel sorry for anyone,
    then what I'm asking you to do, ladies and
    gentlemen, is to override any such feelings
    with your sense of duty as jurors, with your
    sense of responsibility as citizens, and with
    your desire to do the job you've sworn to do
    in this court of law. And consider this.
    During this testimony Kurt Coriaty said that
    if he had not been indicted and prosecuted
    for his drug dealings, that he would still be
    on the street today selling drugs. So ask
    yourselves, ladies and gentlemen, if you fail
    to do your duty as jurors and find any
    defendant not guilty just because you feel
    sorry for him, are you doing your community a
    service? Are you doing your families a
    service? And are you really doing that
    defendant a service?

    47














    was likely affected." United States v. Mejia-Lozano, 829 F.2d
    ______________ ____________

    268, 274 (1st Cir. 1987); accord United States v. Mateos-Sanchez,
    ______ _____________ ______________

    864 F.2d 232, 240-41 (1st Cir. 1988). None of the quoted

    statements comprise plain error in the setting of this trial.

    1. Protection of the Community. The first statement,
    1. Protection of the Community.
    ___________________________

    see supra note 21, went too far: prosecutors overreach when they
    ___ _____

    ask jurors to function as de facto vigilantes. Yet, importantly,
    __ _____

    cf. United States v. Lester, 749 F.2d 1288, 1301 (9th Cir. 1984),
    ___ _____________ ______

    there is no sign that the buzznacking about the Sepulveda

    organization resuming operations, while gratuitous, was part of a

    pattern of remarks specifically intended to inflame the jury.

    The reference was not prominently featured in the summation;

    rather, it was prefatory, serving to introduce a recitation of

    evidence that had been presented at the trial. When, as in this

    case, the evidence of defendants' guilt is strong, courts should

    be very reluctant to find plain error in misguided rhetoric. See
    ___

    United States v. Santana-Camacho, 833 F.2d 371, 373-74 (1st Cir.
    _____________ _______________

    1987); Mejia-Lozano, 829 F.2d at 274; United States v. Capone,
    ____________ _____________ ______

    683 F.2d 582, 586-87 (1st Cir. 1982). So here: we think it is

    wildly improbable, given the weight of the evidence, that what we

    read as an isolated, relatively subdued appeal for law

    enforcement affected the trial's outcome. Consequently, the

    resumption-of-business remarks do not furnish a basis for

    reversal. See United States v. Smith, 918 F.2d 1551, 1562-63
    ___ ______________ _____

    (11th Cir. 1990); Hernandez, 891 F.2d at 527; United States v.
    _________ ______________

    Monaghan, 741 F.2d 1434, 1441 n.30 (D.C. Cir. 1984), cert.
    ________ _____


    48














    denied, 470 U.S. 1085 (1985).
    ______

    2. The War on Drugs. A somewhat different set of
    2. The War on Drugs.
    _________________

    considerations informs our analysis of the next two passages.

    Defense attorneys introduced the phrase "war on drugs" and used

    it repeatedly during their opening statements and, later, during

    their summations. Mindful of the environment created by the

    defense, we cannot say that the government's two rebuttal

    references to an ongoing war on drugs, though better left unsaid,

    comprised plain error. The ancient adage applies: what is sauce

    for the government's goose often may prove to be sauce for the

    defendants' gander.

    Although we deplore frank appeals to passion of the

    sort typified by "war on drugs" rhetoric, see, e.g., Arrieta-
    ___ ____ ________

    Agressot, 3 F.3d at 527, we regard it as settled that references
    ________

    to law enforcement efforts are not forbidden in summation if such

    references are incited or invited by, or fairly respond to,

    defendants' closing statements. See, e.g., Smith, 918 F.2d at
    ___ ____ _____

    1563; United States v. Brown, 887 F.2d 537, 542 (5th Cir. 1989);
    _____________ _____

    Machor, 879 F.2d at 956; United States v. Bascaro, 742 F.2d
    ______ _____________ _______

    1335, 1353-54 (11th Cir. 1984), cert. denied, 472 U.S. 1017
    _____ ______

    (1985). Though there may well be exceptions to this rule,24 no

    such exceptions lie for cases like this one cases where the

    dysphemisms are few in number, do not escalate the level of fire

    ____________________

    24We have, for instance, warned prosecutors that "there are
    limits to the extent that we will permit fighting fire with
    fire." Mejia-Lozano, 829 F.2d at 274. Merely because a defense
    ____________
    attorney opens the door does not mean that a prosecutor can come
    storming through it in a pair of hobnailed boots.

    49














    and brimstone that characterized the defense's oratory, and do

    not provoke a contemporaneous objection. See United States v.
    ___ ______________

    Tajeddini, 996 F.2d 1278, 1285 (1st Cir. 1993); Mejia-Lozano, 829
    _________ ____________

    F.2d at 274.

    3. Discouraging Sympathy. For somewhat similar
    3. Discouraging Sympathy.
    ______________________

    reasons, we find the final challenged statement, quoted supra
    _____

    note 23, to fall within the pale. Viewed in context, this

    statement, which questioned whether an acquittal out of sympathy

    would be in the community interest, was made to dampen the

    defense's flirtation with jury nullification (described infra
    _____

    Part VIII). Courts should allow prosecutors greater leeway in

    rebuttal when the defense has itself breached the standards for

    proper summation. See Young, 470 U.S. at 11; Lawn v. United
    ___ _____ ____ ______

    States, 355 U.S. 339, 359 n.15 (1958); Mejia-Lozano, 829 F.2d at
    ______ ____________

    274; United States v. Flaherty, 668 F.2d 566, 598 (1st Cir.
    _____________ ________

    1981). Applying this offshoot of the goose-and-gander principle,

    we hold that the challenged comment did not constitute plain

    error.

    VIII. JURY NULLIFICATION
    VIII. JURY NULLIFICATION

    The defendants invoked the specter of jury

    nullification during final arguments. Labrie's lawyer, in

    particular, invited the jury to "send out a question" concerning

    this doctrine. Three non-events followed; the government did not

    object to this soliloquy, the district court did not intervene

    sua sponte, and the court's charge did not broach the subject.
    ___ ______

    Nevertheless, the deliberating jury took the invitation literally


    50














    and asked the judge to "[c]larify the law on jury nullification."

    The court responded by telling the jury:

    Federal trial judges are forbidden to
    instruct on jury nullification, because they
    are required to instruct only on the law
    which applies to a case. As I have indicated
    to you, the burden in each instance which is
    here placed upon the Government is to prove
    each element of the offenses . . . beyond a
    reasonable doubt, and in the event the
    Government fails to sustain its burden of
    proof beyond a reasonable doubt as to any
    essential element of any offense charged
    against each defendant, it has then failed in
    its burden of proof as to such defendant and
    that defendant is to be acquitted. In short,
    if the Government proves its case against any
    defendant, you should convict that defendant.
    If it fails to prove its case against any
    defendant you must acquit that defendant.

    Appellants objected to this supplemental instruction. They now

    argue that the instruction amounted to a wrongful repudiation of

    the time-honored concept of jury nullification.

    The applicable rule is that, although jurors possess

    the raw power to set an accused free for any reason or for no

    reason, their duty is to apply the law as given to them by the

    court. See United States v. Boardman, 419 F.2d 110, 116 (1st
    ___ _____________ ________

    Cir. 1969), cert. denied, 397 U.S. 991 (1970). Accordingly,
    _____ ______

    while jurors may choose to flex their muscles, ignoring both law

    and evidence in a gadarene rush to acquit a criminal defendant,

    neither the court nor counsel should encourage jurors to exercise

    this power. See United States v. Trujillo, 714 F.2d 102, 106
    ___ ______________ ________

    (11th Cir. 1983). A trial judge, therefore, may block defense

    attorneys' attempts to serenade a jury with the siren song of

    nullification, see United States v. Garcia-Rosa, 876 F.2d 209,
    ___ _____________ ___________

    51














    226 (1st Cir. 1989); and, indeed, may instruct the jury on the

    dimensions of their duty to the exclusion of jury nullification,

    see Trujillo, 714 F.2d at 105-06 (collecting cases).
    ___ ________

    To the extent that appellants, during closing argument,

    managed to mention nullification, they received more than was

    their due. Having pocketed this gratuity, appellants now

    complain that they were not allowed to capitalize on it. When

    the jurors rose to the bait, appellants say, Judge Devine should

    have assured them that nullification is an "historical

    prerogative" of juries from time immemorial. We disagree.

    Though jury nullification has a long and sometimes storied past,

    see Boardman, 419 F.2d at 116, the case law makes plain that a
    ___ ________

    judge may not instruct the jury anent its history, vitality, or

    use. See, e.g., United States v. Desmarais, 938 F.2d 347, 350
    ___ ____ _____________ _________

    (1st Cir. 1991) (collecting cases). This proscription is

    invariant; it makes no difference that the jury inquired, or that

    an aggressive lawyer managed to pique a particular jury's

    curiosity by mentioning the subject in closing argument, or that

    a napping prosecutor failed to raise a timely objection to that

    allusion. Thus, the district court appropriately scotched

    appellants' suggested jury instruction.

    Appellants' fallback position that the district

    court, if disinclined to sing the praises of jury nullification,

    should have refrained from giving any supplemental instruction

    and, instead, should have stonewalled is not well conceived.

    The objection focuses on the district court's opening comment


    52














    that "[f]ederal trial judges are forbidden to instruct on jury

    nullification," interpreting this as a judicial prohibition

    against the jury's use of its inherent power. The objection

    fails for several reasons, most noticeably because the quoted

    statement conveys no such chilling effect.

    Taken literally, the judge's comment is an accurate

    recitation of the law and an appropriate rejoinder to the jury's

    question on nullification (a question that appellants prompted).

    The district court explained why it could not answer the jury's

    request for more information on nullification. The court went on

    to repeat its earlier instruction that if the government proved

    its case the jury "should" convict, while if the government

    failed to carry its burden the jury "must" acquit. This contrast

    in directives, together with the court's refusal to instruct in

    any detail about the doctrine of jury nullification, left

    pregnant the possibility that the jury could ignore the law if it

    so chose. Whether the jury perceived this possibility or not, no

    error infiltrated the court's supplemental instruction.

    IX. VARIANCE BETWEEN INDICTMENT AND PROOF
    IX. VARIANCE BETWEEN INDICTMENT AND PROOF

    Appellants Edgar Sepulveda and Tony Rood now claim that

    the district court should have acquitted them because they were

    not part of the charged conspiracy. We review their claims to

    determine whether there is sufficient evidence to support the

    jury's verdict. See David, 940 F.2d at 732. We conclude that a
    ___ _____

    rational jury could find, as this jury did, that a single

    conspiracy existed, and that the two objectors participated in


    53














    it.

    We start with bedrock. Ordinarily, questions anent the

    number and structure of conspiracies present matters of fact

    suitable for resolution by a jury. See id.; United States v.
    ___ ___ ______________

    Boylan, 898 F.2d 230, 243 (1st Cir.), cert. denied, 489 U.S. 849
    ______ _____ ______

    (1990). Of course, the jury's inquiry is guided by certain

    principles. For example, in a unitary conspiracy it is not

    necessary that the membership remain static, see United States v.
    ___ _____________

    Perholtz, 842 F.2d 343, 364 (D.C. Cir.), cert. denied, 488 U.S.
    ________ _____ ______

    821 (1988), or that all members join at the same time, see United
    ___ ______

    States v. Cintolo, 818 F.2d 980, 997 (1st Cir.) (deeming that
    ______ _______

    latecomers to a conspiracy adopt the prior acts and declarations

    of earlier arrivals), cert. denied, 484 U.S. 913 (1987), or that
    _____ ______

    a given member knows all his fellow coconspirators, see Rivera-
    ___ _______

    Santiago, 872 F.2d at 1079. Similarly, the modus operandi of a
    ________ _____ ________

    conspiracy may vary over time without negating the existence of a

    single conspiracy. See Garcia-Rosa, 876 F.2d at 223.
    ___ ___________

    Turning to the instant case, several defendants argued

    that they were not members of the charged conspiracy. The

    district court instructed the jury that it should convict a

    particular defendant only if it found him or her to be part of

    the single conspiracy limned in the indictment. The court

    cautioned the jurors that they must acquit any defendant not

    linked to that conspiracy even if they concluded that such

    defendant had been a member of a separate, equally heinous

    conspiracy. The verdict, then, had the effect of rejecting the


    54














    "multiple conspiracy" defense, instead signifying the jury's

    contrary conclusion that the appellants collogued together within

    the framework of the master conspiracy.

    To be sure, the charged conspiracy had a protean

    quality but many criminal conspiracies, particularly large

    conspiracies that function for extended periods of time, must

    adjust to cope with changing conditions. In this respect,

    conspiracies are like other business organizations: a conspiracy

    may hire, fire, retool, change suppliers, expand, downsize,

    refine its operating practices, undertake new marketing

    strategies, or shift its priorities from time to time without

    sacrificing its essential identity. It is, therefore, not fatal

    to the government's "single conspiracy" theory that David

    Sepulveda began his career by patronizing a cocaine supplier in

    Nashua, and later switched to a source in Lawrence. Likewise,

    the fact that the organization's methods and tactics evolved over

    time did not dictate a finding of two, three, or four separate

    conspiracies. The government offered evidence showing that,

    throughout the six-year period covered by the indictment, the

    goals of the organization were constant, its leadership did not

    change, and much of its membership remained stable. These are

    important indicia of unitariness. See David, 940 F.2d at 734.
    ___ _____

    All in all, we find the common threads adequate to create a jury

    question as to whether a single conspiracy existed.

    The evidence tying Edgar Sepulveda to the single

    conspiracy is more than ample. Two witnesses testified that


    55














    Edgar, himself, sold them cocaine. Four witnesses testified that

    Edgar routinely accompanied his brother, David, on drug-buying

    sprees. One of these witnesses, Norberto Perez, testified to

    taking an average of one such trip a week with the Sepulveda

    siblings over a protracted period of time. Another witness, John

    Rice, testified that he saw the Sepulvedas packaging cocaine at

    Driesse's home.

    There is similar, albeit less pervasive, evidence of

    Rood's role in the organization. Perez testified that he and

    Rood made over fifteen trips to Lawrence in order to replenish

    David Sepulveda's drug inventory. When David agreed to pay

    Santos in kind for chauffeuring him during a drug delivery, he

    instructed Rood, in Santos's presence, to give Santos his

    stipend. On another occasion, David sent Rood and Perez to

    retrieve cocaine that had been abandoned during a police chase.

    Finally, a gaggle of witnesses, including Santos, testified that

    they had purchased cocaine from Rood. From this variegated proof

    the jury could permissibly weave a tapestry linking Rood with the

    master conspiracy rather than isolating him within the cloister

    of the self-styled "mini-conspiracy" in which he now professes to

    have been involved. See Moran, 984 F.2d at 1304; Glenn, 828 F.2d
    ___ _____ _____

    at 861-62.

    To recapitulate, the record satisfactorily supports a

    multifaceted finding that the single conspiracy charged in the

    indictment existed and that both Edgar Sepulveda and Tony Rood

    enlisted in it. Thus, no material variance existed and the


    56














    district court properly refused to order acquittal.

    X. POTPOURRI
    X. POTPOURRI

    Appellants raise a number of other issues. Believing

    that exegetic treatment of these points would serve no useful

    purpose, we reject some by means of this global reference and

    discuss the rest in summary fashion.

    A. Particularity of the Indictment.
    A. Particularity of the Indictment.
    _______________________________

    Two appellants challenge the particularity of the

    indictment as it applies to them. While we comment separately on

    each challenge, we first lay out the black-letter rule: in

    general, an indictment is sufficiently particular if it

    elucidates the elements of the crime, enlightens a defendant as

    to the nature of the charge against which she must defend, and

    enables her to plead double jeopardy in bar of future

    prosecutions for the same offense. See Hamling v. United States,
    ___ _______ _____________

    418 U.S. 87, 117 (1974) (collecting cases); see also Fed. R.
    ___ ____

    Crim. P. 7(c)(1).

    1. Arline Welch. Defendant Arline Welch argues that,
    1. Arline Welch.
    ____________

    as it applies to her, the indictment transgresses the Hamling
    _______

    guidelines. The gravamen of her complaint is that the indictment

    neither contains the elements of the crime charged nor limns the

    date, time, and place of her ostensible criminal activity. We

    think her reading of the charging papers is colored by self-

    interest.

    The grand jury indicted Welch for conspiracy to possess

    and distribute cocaine in violation of 21 U.S.C. 846. To


    57














    convict her, therefore, the government had to show beyond a

    reasonable doubt that a drug-trafficking conspiracy existed about

    which Welch knew and in which she voluntarily participated. See
    ___

    David, 940 F.2d at 735 (explaining elements of conspiracy under
    _____

    846); Gomez-Pabon, 911 F.2d at 852 (similar). The indictment
    ___________

    specifies the law which Welch is alleged to have violated and

    elaborates that she, with others, "knowingly" and "intentionally"

    agreed to act in contravention of that law. The indictment also

    provides a temporal framework, asserts that Welch's residence was

    used as a packaging center for the drug distribution ring, and

    states that she worked as a "runner" and a "street-level dealer."

    We think this information sufficiently spelled out the crime,

    apprised Welch of the charge against which she had to defend, and

    protected her from the boggart of double jeopardy. See Hamling,
    ___ _______

    418 U.S. at 117; Paiva, 892 F.2d at 154. In the last analysis,
    _____

    indictments need not be infinitely specific.

    2. Kevin Cullinane. Defendant Kevin Cullinane also
    2. Kevin Cullinane.
    _______________

    challenges the indictment's particularity. Notwithstanding the

    pervasive proof of his complicitous conduct adduced at trial, see
    ___

    supra Part II(B), Cullinane points out that the indictment itself
    _____

    only mentions him twice, asserting that he purchased cocaine from

    David Sepulveda and that, on one specific occasion, he

    distributed cocaine to another coconspirator. But the frequency

    with which a person is (or is not) mentioned in an indictment is

    an insufficient indicium of the indictment's particularity.

    Here, the charging papers contained considerable contextual


    58














    detail. Given the indictment's general description of the

    conspiracy and identification of the alleged coconspirators, we

    find that it put Cullinane on fair notice and contained

    information sufficient to allow him to prepare his defense. See
    ___

    Hamling, 418 U.S. at 117. The drug conspiracy statute, 21 U.S.C.
    _______

    846, does not require the government to plead or prove any

    particular overt acts in furtherance of a charged conspiracy.

    See United States v. O'Campo, 973 F.2d 1015, 1019-20 (1st Cir.
    ___ ______________ _______

    1992); Paiva, 892 F.2d at 155.
    _____

    B. Bill of Particulars.
    B. Bill of Particulars.
    ___________________

    The same two appellants assign error to the lower

    court's denial of their motions for bills of particulars.

    Motions for bills of particulars are seldom employed in modern

    federal practice. When pursued, they need be granted only if the

    accused, in the absence of a more detailed specification, will be

    disabled from preparing a defense, caught by unfair surprise at

    trial, or hampered in seeking the shelter of the Double Jeopardy

    Clause. See United States v. Abreu, 952 F.2d 1458, 1469 (1st
    ___ _____________ _____

    Cir.) (collecting cases), cert. denied, 112 S. Ct. 1695 (1992).
    _____ ______

    We review refusals to require such bills under an abuse-of-

    discretion test. See United States v. Hallock, 941 F.2d 36, 40
    ___ _____________ _______

    (1st Cir. 1991).

    Here, both appellants enjoyed the benefits of modified

    open-file discovery, i.e., automatic discovery that encompassed
    ____

    all relevant data except Jencks Act material related to witnesses

    not employed in law enforcement. Neither appellant convincingly


    59














    relates a concrete instance of inability to prepare, untenable

    surprise, or other cognizable prejudice stemming from the trial

    court's refusal to mandate further particulars. For our part, we

    have been unable to discover any such instance. In the

    unremarkable circumstances of this case, the district court acted

    well within the encincture of its discretion in denying

    appellants' motions.

    C. Speedy Trial.
    C. Speedy Trial.
    ____________

    Arline Welch contends that the court below erred in

    refusing to dismiss the charges against her on the ground that

    too long a time intervened between indictment and trial. Her

    claim invokes the Speedy Trial Act, 18 U.S.C. 3161-3174

    (1988). The Act provides in pertinent part:

    In any case in which a plea of not
    guilty is entered, the trial of a defendant
    charged in an . . . indictment . . . shall
    commence within seventy days from the filing
    date . . . of the . . . indictment, or from
    the date the defendant has appeared before a
    judicial officer . . ., whichever date last
    occurs.

    18 U.S.C. 3161(c)(1).

    For Speedy Trial Act purposes, time has both

    quantitative and qualitative dimensions. The Act's 70-day trial

    mandate, see id., exemplifies its quantitative side. On the
    ___ ___

    qualitative side, the Act excludes from the 70-day period

    intervals of delay that result from such events as the pendency

    of pretrial motions, see 18 U.S.C. 3161(h)(1)(F), the presence
    ___

    of other defendants in the case "as to whom the time for trial

    has not run and no motion for severance has been granted," id. at
    ___

    60














    3161(h)(7), or continuances which serve the "ends of justice,"

    id. at 3161(h)(8)(A). Therefore, a violation of the Act occurs
    ___

    only if (i) a sufficient number of days elapse (the quantitative

    benchmark), and (ii) the days are nonexcludable (the qualitative

    benchmark).

    Against this background, the chronology of Welch's case

    is telling. Her arraignment took place on November 19, 1990, and

    her trial started on April 2, 1991. Quantitatively, this 134-day

    interval exceeds the goal set by the Speedy Trial Act. But,

    qualitatively, the record presents a much more excusatory

    picture. The bulk of the time elapsed between arraignment and

    trial is excludable for Speedy Trial Act purposes because

    pretrial motions filed by the defendants, as a group, engendered

    considerable delay (bringing the nonexcludable time to fewer than

    35 days). Hence, the court below did not err in declining to

    dismiss the case under the Speedy Trial Act.25 See, e.g.,
    ___ ____

    United States v. Ramirez, 973 F.2d 36, 37 (1st Cir. 1992)
    ______________ _______

    (collecting cases); United States v. Torres Lopez, 851 F.2d 520,
    _____________ ____________

    526 (1st Cir. 1988), cert. denied, 489 U.S. 1021 (1989); United
    _____ ______ ______

    States v. Anello, 765 F.2d 253, 256-58 (1st Cir.), cert. denied,
    ______ ______ _____ ______

    474 U.S. 996 (1985).

    D. David Chase's Testimony.
    D. David Chase's Testimony.
    _______________________

    At trial, David Chase testified that he regularly

    ____________________

    25We note that the district court also granted an ends-of-
    justice continuance on December 18, 1990, in response to David
    Sepulveda's motion for an extension of discovery deadlines,
    thereby providing an additional source of excludable time. See
    ___
    18 U.S.C. 3161(h)(8)(A).

    61














    purchased cocaine from appellant Cullinane until, having grown

    dissatisfied with the quality of Cullinane's wares, he began

    buying directly from David Sepulveda. Cullinane argues before

    us, as he argued below, that Chase's testimony should have been

    purged because Chase did not explicitly tie Cullinane to

    Sepulveda. We disagree.

    The relevancy of a witness's testimony cannot be

    gauged in isolation. See United States v. Hickey, 596 F.2d 1082,
    ___ _____________ ______

    1089 (1st Cir.), cert. denied, 444 U.S. 853 (1979). Several
    _____ ______

    witnesses other than Chase described Cullinane's dealings with

    Sepulveda, including his purchases of contraband and their joint

    participation in drug-buying excursions. Given this contextual

    detail, the jury could well infer that the sales to Chase were

    connected to the Cullinane-Sepulveda axis. In a criminal case,

    proof need not be explicit; juries are permitted, indeed,

    encouraged, to draw reasonable inferences from the facts before

    them. See, e.g., Echeverri, 982 F.2d at 679; United States v.
    ___ ____ _________ _____________

    Ingraham, 832 F.2d 229, 239-40 (1st Cir. 1987), cert. denied, 486
    ________ _____ ______

    U.S. 1009 (1988). The district court did not abuse its

    discretion in admitting evidence of Cullinane's sales to Chase as

    circumstantial evidence of Cullinane's role in the distribution

    network.

    E. Steven Ranfros's Testimony.
    E. Steven Ranfros's Testimony.
    __________________________

    David Sepulveda objected to the testimony of Steven

    Ranfros, a police officer who recounted that Sepulveda and

    several of his associates chased Ranfros when they discovered him


    62














    watching them from a wooded area. Sepulveda insists that

    Ranfros's testimony lacks any relevance.

    Relevance is defined in terms of probative value, see
    ___

    Fed. R. Evid. 401, and trial courts are afforded wide discretion

    in assessing the relevance and probative value of proffered

    evidence. See United States v. Sutton, 970 F.2d 1001, 1006 (1st
    ___ _____________ ______

    Cir. 1992); United States v. Nickens, 955 F.2d 112, 125 (1st
    ______________ _______

    Cir.), cert. denied, 113 S. Ct. 108 (1992). We will disturb an
    _____ ______

    exercise of that discretion only upon a showing of manifest

    abuse. See United States v. Yefsky, 994 F.2d 885, 898 (1st Cir.
    ___ _____________ ______

    1993). We discern no such problem here. Ranfros's testimony

    could be taken to bear on guilty knowledge, and, thus, the

    district court had discretion to allow the jury to consider it.

    F. The Terry Stop.
    F. The Terry Stop.
    ______________

    At trial, the government introduced evidence that the

    police seized $4,200 from David Sepulveda after a highway stop

    near Nashua. Sepulveda moved to suppress the evidence. The

    government contended that the cash constituted the fruits of a

    search incident to a lawful arrest. The district court denied

    the suppression motion without comment. Sepulveda assigns error

    to this ruling and to the admission of evidence emanating from

    the seizure.

    In its appellate brief, the government concedes the

    fallibility of the construct that it hawked in the district court

    and, instead, attempts to justify the search under Terry v. Ohio,
    _____ ____

    392 U.S. 1, 29-30 (1968). At oral argument the government


    63














    executed yet another about-face, acknowledging that the Terry-
    _____

    based yarn spun in its brief is easily unravelled. We do not

    find it surprising that the prosecution, like a Pirandello

    character in search of an author, has encountered insuperable

    difficulties in articulating a viable theory: the short of it is

    that the cash was unlawfully seized and that evidence derived

    from the seizure should have been suppressed. We do not

    understand why the government is unwilling simply to face that

    fact or why it pressed so vigorously to have evidence obtained

    in a patently illegal manner admitted in the first place.

    At any rate, the matter is academic. As a general

    rule, a defendant is not shielded if the government violates

    someone else's constitutional rights. See United States v.
    ___ ______________

    Santana, 6 F.3d 1, 8 (1st Cir. 1993). Consequently, Sepulveda's
    _______

    coconspirators have no standing to raise a claimed abridgment of

    his Fourth Amendment rights. See United States v. Padilla, 113
    ___ _____________ _______

    S. Ct. 1936, 1939 (1993); Rawlings v. Kentucky, 448 U.S. 98, 106
    ________ ________

    (1980).

    As to Sepulveda himself, the erroneously admitted

    evidence is cumulative. In testimony not covered by the motion

    to suppress, a civilian witness, Michael Lacerte, related that he

    had given the funds in question to Sepulveda so that Sepulveda

    could buy cocaine. Lacerte also recounted Sepulveda's

    explanation as to seizure of the money. Under the circumstances,

    and bearing in mind the factors that frame our inquiry, see supra
    ___ _____

    pp. 30, whatever error inhered in admitting evidence anent the


    64














    seizure and its sequelae was entirely harmless.

    G. Jury Taint.
    G. Jury Taint.
    __________

    At one point during the trial, a juror joked about one

    of the defendants. The district court proceeded to question two

    jurors out of earshot of the venire. After identifying the

    individual responsible for the wisecrack, the court dismissed

    her. Appellants moved unsuccessfully for a mistrial and now

    posit error based on the denial of their motion.

    We find nothing amiss. When a potentially taint-

    producing event threatens to mar the jury's integrity, the

    district court has fairly broad discretion in deciding whether

    the situation is susceptible to remediation, and if so, what

    corrective action might be appropriate. See Boylan, 898 F.2d at
    ___ ______

    258; Gutierrez-Rodriguez v. Cartagena, 882 F.2d 553, 570 (1st
    ___________________ _________

    Cir. 1989). Unless the event leaves so sour a taste that less

    extreme palliatives will prove inadequate to undo serious damage,

    the mere possibility of jury taint does not necessitate a

    mistrial. See United States v. Hunnewell, 891 F.2d 955, 960-61
    ___ _____________ _________

    (1st Cir. 1989). Mindful of the trial court's superior coign of

    vantage, we accord great respect to a district judge's finding

    that a jury has not been irreparably tainted. See Boylan, 898
    ___ ______

    F.2d at 258.

    Here, the judge employed a combination of

    amelioratives: he removed the offending juror from the case and

    issued hortatory instructions to the remaining jurors. Given

    what transpired, the judge's prescription seems reasonably well


    65














    calculated to protect the defendants' legitimate rights; the

    joke, albeit tasteless, did not work a per se deprivation of
    ___ __

    appellants' right to a fair trial. Consequently, the court acted

    appropriately in refusing to abort the trial. See Hunnewell, 891
    ___ _________

    F.2d at 961.

    H. Destruction of Evidence.
    H. Destruction of Evidence.
    _______________________

    On May 5, 1989, in the course of a separate

    investigation, the government took custody of certain telephone

    records belonging to defendant Cullinane. After examining the

    records, the government returned them to Cullinane's housemate.

    In turn, the housemate threw them out. Seizing on this

    development, appellant Arline Welch asseverates that those

    records may have contained exculpatory material vis-a-vis her

    relationship with Cullinane and that, therefore, the government's

    failure to maintain them requires dismissal of the indictment.

    The asseveration is full of holes.

    Government destruction of potentially exculpatory

    evidence only violates the rule in Brady, 373 U.S. at 87, if the
    _____

    evidence possesses apparent exculpatory value that cannot fully

    be replicated through other sources, and if the government acts

    willfully or in bad faith in failing to preserve it. See Arizona
    ___ _______

    v. Youngblood, 488 U.S. 51, 58 (1988); California v. Trombetta,
    __________ __________ _________

    467 U.S. 479, 488-89 (1984); United States v. Femia, ___ F.3d
    _____________ _____

    ___, ___ (1st Cir. 1993) [No. 93-1276, slip op. at 8-9].

    Government investigators typically cast a wide net and haul in a

    variety of items. While evidence, once seized, cannot be


    66














    destroyed willy-nilly, the government does not become an insurer

    of the perpetual availability of every item caught in its

    investigatory net. See, e.g., United States v. Kincaid, 712 F.2d
    ___ ____ _____________ _______

    1, 2-3 (1st Cir. 1983).

    In the situation at hand, the government did not

    destroy the records Welch seeks but merely returned them to

    Cullinane's residence. There is no hint of bad faith and no

    indication that the agents knew, or should have anticipated, that

    Cullinane's friend would thereafter discard them. Accordingly,

    Welch's motion is best regarded as a throwaway.26

    I. Cumulative Error.
    I. Cumulative Error.
    ________________

    Appellants argue that even if certain trial errors,

    taken in isolation, appear harmless, the accumulation of errors

    effectively undermines due process and demands a fresh start. We

    accept the theoretical underpinnings of this argument.

    Individual errors, insufficient in themselves to necessitate a

    new trial, may in the aggregate have a more debilitating effect.

    See, e.g., United States v. Dwyer, 843 F.2d 60, 65 (1st Cir.
    ___ ____ _____________ _____

    1988); Dunn v. Perrin, 570 F.2d 21, 25 (1st Cir.), cert. denied,
    ____ ______ _____ ______

    437 U.S. 910 (1978); cf. United States v. Samango, 607 F.2d 877,
    ___ _____________ _______

    884 (9th Cir. 1979) (employing cumulative error doctrine to

    invalidate results of grand jury proceeding). In other words, a

    column of errors may sometimes have a logarithmic effect,

    producing a total impact greater than the arithmetic sum of its


    ____________________

    26In view of this shortfall, we need not address the other
    prongs of the test.

    67














    constituent parts.

    Of necessity, claims under the cumulative error

    doctrine are sui generis. A reviewing tribunal must consider
    ___ _______

    each such claim against the background of the case as a whole,

    paying particular weight to factors such as the nature and number

    of the errors committed; their interrelationship, if any, and

    combined effect; how the district court dealt with the errors as

    they arose (including the efficacy or lack of efficacy of any

    remedial efforts); and the strength of the government's case.

    See, e.g., Mejia-Lozano, 829 F.2d at 274 n.4. The run of the
    ___ ____ ____________

    trial may also be important; a handful of miscues, in

    combination, may often pack a greater punch in a short trial than

    in a much longer trial.

    The cumulative error doctrine is inapposite here.

    While we have uncovered a few benign bevues, e.g., the district
    ____

    court's failure to grant David Sepulveda's motion to suppress

    evidence of money illegally seized from him, see supra Part X(F),
    ___ _____

    and the ill-advised admission of two statements unsupported by

    extrinsic evidence and, hence, ineligible for special swaddling

    under Fed. R. Evid. 801(d)(2)(E), see supra Part V(B), the errors
    ___ _____

    were not portentous; they were few and far between; they

    possessed no special symbiotic effect; they occurred in the

    course of a two-month trial; and the government's case was very

    strong. Consequently, the errors, in the aggregate, do not come

    close to achieving the critical mass necessary to cast a shadow

    upon the integrity of the verdict.


    68














    Considering the trial's length, complexity, and hard-

    fought nature, the district court's handling of it evokes our

    admiration. Appellants' focus on cumulative error does not

    change the picture. The Constitution entitles a criminal

    defendant to a fair trial, not to a mistake-free trial. See
    ___

    Delaware v. Van Arsdall, 475 U.S. 673, 681 (1986); United States
    ________ ___________ _____________

    v. Polito, 856 F.2d 414, 418 (1st Cir. 1988). When all is said
    ______

    and done, the proceedings here meet this measure.

    XI. SENTENCING ISSUES
    XI. SENTENCING ISSUES

    The sentencing issues raised in these appeals implicate

    the federal sentencing guidelines.27 See David, 940 F.2d at
    ___ _____

    739 (holding that the guidelines apply to a conspiracy that

    "begins before the guidelines' effective date and continues after

    the effective date"). Six appellants (Rood, Wallace, Cullinane,

    Arline Welch, Edward Welch, and Johnson) challenge rulings

    relative to the imposition of sentence.28 To the extent that

    these challenges touch upon the district court's factfinding or

    its evaluative judgments in applying the guidelines to the facts

    as found, appellate review is for clear error. See United States
    ___ _____________

    ____________________

    27Since the district court sentenced appellants on various
    dates in January 1992, the November 1991 version of the
    sentencing guidelines applies in this case. See United States v.
    ___ _____________
    Harotunian, 920 F.2d 1040, 1041-42 (1st Cir. 1990) ("Barring any
    __________
    ex post facto problem, a defendant is to be punished according to
    __ ____ _____
    the guidelines in effect at the time of sentencing.").
    Therefore, all references to the sentencing guidelines will be to
    the November 1991 edition, unless otherwise specifically
    indicated.

    28The court below sentenced appellants to assorted prison
    terms ranging from a high of almost twenty-two years (David
    Sepulveda) to a low of five years.

    69














    v. St. Cyr, 977 F.2d 698, 701 (1st Cir. 1992). To the extent
    ________

    that the challenges raise "pure" questions of law or require

    interpretation of the guidelines, our review is plenary. See id.
    ___ ___

    A. General Principles.
    A. General Principles.
    __________________

    In drug-trafficking cases under the sentencing

    guidelines, sentences are largely quantity-driven. See, e.g.,
    ___ ____

    United States v. Morillo, ___ F.3d ___, ___ (1st Cir. 1993) [No.
    _____________ _______

    93-1388, slip op. at 12 & n.10]; United States v. Garcia, 954
    _____________ ______

    F.2d 12, 15 (1st Cir. 1992); United States v. Blanco, 888 F.2d
    _____________ ______

    907, 909-11 (1st Cir. 1989); see also United States v. Bradley,
    ___ ____ ______________ _______

    917 F.2d 601, 604 (1st Cir. 1990) (describing drug quantity as "a

    key datum" for sentencing purposes). The drug quantity

    attributable to a particular defendant is derived by adding

    together the amounts of narcotics, actual or negotiated, bound up

    in the acts "that were part of the same course of conduct or

    common scheme or plan as the offense of conviction." U.S.S.G.

    1B1.3(a)(2). However, in the context of jointly undertaken

    criminal activity, such as a conspiracy, a defendant is not

    automatically saddled with the full weight of the conspiracy's

    wrongdoing; rather, a defendant is responsible for drugs he

    personally handled or anticipated handling, and, under the

    relevant conduct rubric, for drugs involved in additional acts

    that were reasonably foreseeable by him and were committed in

    furtherance of the conspiracy. See Garcia, 954 F.2d at 15;
    ___ ______

    David, 940 F.2d at 742; see also U.S.S.G. 1B1.3(a)(1), comment.
    _____ ___ ____

    (n.1). In this regard, we have emphasized that "the measure of a


    70














    defendant's accountability for drug transactions in which he was

    not personally involved is usually congruent with the scope of

    his agreement with the other participants in the criminal

    enterprise." Garcia, 954 F.2d at 16.
    ______

    B. Tony Rood; William Wallace.
    B. Tony Rood; William Wallace.
    __________________________

    Appellants Rood and Wallace object to the district

    court's attribution of particular drug quantities to them.

    Because the same type of error infects both sentences, we discuss

    them in the ensemble.

    In regard to Rood and Wallace, the district court's

    drug quantity calculations rested essentially on Perez's trial

    testimony.29 According to Perez, Rood accompanied him on

    fifteen to twenty drug-buying jaunts and Wallace accompanied him

    on ten to fifteen such trips. Perez did not assign particular

    amounts to particular people on particular trips. Rather, he

    testified in sweeping generalities, stating that the smallest

    amount he remembered having been acquired, in the eighty or so

    trips he took with Sepulveda and an assortment of companions over

    a two-year period (1987-1989), was four ounces (113.4 grams), and

    the largest amount acquired was one kilogram (an amount purchased

    more than once). In preparing the presentence investigation

    report (PSI Report), the probation department adopted methods of

    calculation apparently urged by the prosecution. The basic


    ____________________

    29To be sure, there was some evidence of participation by
    Rood and-or Wallace in a few other incidents. But the quantities
    involved in these incidents were niggling in comparison to the
    Sepulveda trips and, thus, do not affect these appeals.

    71














    method was to construct a double "average" covering both the

    number of runs and the amount of cocaine carried. This was done

    by taking the midpoint of the high and low figures and

    multiplying the average number of runs by the average amount

    carried. Thus, in Wallace's case, the PSI Report assumed twelve

    runs (an alleged "average" of ten and fifteen) and 556 grams per

    run (the rounded-off average, expressed in grams, of four ounces

    and one kilogram), attributing a total of 6.68 kilograms of

    cocaine to him. In Rood's case, a different probation officer

    proposed a slightly more complicated (but methodologically

    similar) calculation and attributed 8.3 kilograms to him. The

    exact mechanics are beside the point; what matters, for our

    purposes, is that, albeit somewhat more circuitously, the

    ultimate attribution of a drug quantity figure to Rood, as to

    Wallace, represented an assumed average number of trips

    multiplied by an assumed average quantity of cocaine per trip.

    The district court held separate sentencing hearings

    for Rood and Wallace. Neither the prosecution nor the defendants

    offered additional evidence. The court, over objection, endorsed

    the probation officers' calculations, attributing 8.3 kilograms

    of cocaine to Rood and 7.6 kilograms to Wallace. This yielded a

    base offense level (BOL) of 32 for each man. See U.S.S.G.
    ___

    2D1.1(c) (6) (Drug Quantity Table) (establishing BOL of 32 for

    at least five but less than fifteen kilograms of cocaine). The

    court essayed further offense-level adjustments (not now in

    dispute), factored Rood's criminal history category (IV) into the


    72














    mix, and set his guideline sentencing range (GSR) at 135-168

    months. The court sentenced Rood at the bottom of the range.

    Wallace displayed a less notorious criminal history (category

    II). Nonetheless, after interim adjustments not material here,

    his GSR proved to be identical. Relying on United States v.
    _____________

    Floyd, 945 F.2d 1096, 1099 (9th Cir. 1991), and citing a lack of
    _____

    adult guidance during Wallace's youth, the court departed

    downward, sentencing him to ten years.30

    The defense's first line of attack is to assail Perez's

    testimony as utterly unreliable in view of his dubious character,

    asserted contradictions, and sundry other defects. But, the

    trial judge heard and saw Perez testify at trial, and credited

    his testimony. Such credibility calls are grist for the trial

    court's mill. See St. Cyr, 977 F.2d at 706. Consequently, we
    ___ _______

    have no basis for overturning this judgment.

    Nonetheless, one swallow does not a summer make. The

    critical problem with respect to these sentences lies not with

    Perez's testimony but with the pyramiding of inferences based

    upon it. Perez's testimony was elicited at trial, not at either

    sentencing hearing, and the prosecution, primarily concerned

    during trial with proving the defendants' participation in a drug

    trafficking conspiracy rather than fixing the precise quantity of

    drugs for which each defendant might be held responsible,


    ____________________

    30Floyd has since been overruled, albeit on other grounds.
    _____
    See United States v. Atkinson, 990 F.2d 501 (9th Cir. 1993).
    ___ _____________ ________
    However, the government has not prosecuted a cross-appeal and the
    validity of the departure decision is not before us.

    73














    obtained a bare minimum of information. With no better

    information at hand, these appellants' sentences cannot be

    upheld.

    For sentencing purposes, the government must prove drug

    quantities by a preponderance of the evidence. See United States
    ___ _____________

    v. Sklar, 920 F.2d 107, 112-13 (1st Cir. 1990); Bradley, 917 F.2d
    _____ _______

    at 605. Courts must sedulously enforce that quantum-of-proof

    rule, for, under the guidelines, drug quantity has a dramatic

    leveraging effect. Thus, relatively small quantitative

    differences may produce markedly different periods of immurement.

    This reality informs the preponderance standard, requiring that

    district courts must base their findings on "reliable

    information" and, where uncertainty reigns, must "err on the side

    of caution." Sklar, 920 F.2d at 113 (quoting United States v.
    _____ ______________

    Walton, 908 F.2d 1289, 1302 (6th Cir.), cert. denied, 498 U.S.
    ______ _____ ______

    990 (1990)).

    These tenets possess particular force on the record

    before us, for we do not believe that the so-called average

    figures selected by the probation officers and adopted by the

    trial court have adequate support in the record. To say that the

    minimum amount carried on a single trip was four ounces and that

    the maximum was one kilogram provides no rational basis for

    presuming that the average amount carried on a given number of

    trips was the mathematical midpoint between the high and low

    figures. Cf. United States v. Hewitt, 942 F.2d 1270, 1274 (8th
    ___ _____________ ______

    Cir. 1991) (condemning use of a "far reaching" averaging


    74














    assumptions in estimating drug quantity). Similarly, while the

    distortions are mathematically less serious, the selection of a

    midpoint in estimating the number of trips is also without

    evidentiary support. And the two flawed findings feed on each

    other; by using not one, but two, unsupported averages to arrive

    at both the number of trips undertaken and the amounts of cocaine

    handled in the course of each trip, the court compounded the

    error of its ways. This is, after all, not a case in which a

    witness testified that, in his or her estimation,"X" equalled the

    average drug quantity involved in a specific number of drug

    transactions. That kind of estimate from a lay witness may

    itself be troublesome, but at least the witness can be cross-

    examined on the figure; and this court has sometimes accepted

    such estimates in the past. See, e.g., United States v.
    ___ ____ ______________

    Innamorati, 996 F.2d 456, 490 (1st Cir.), cert. denied, ___ S.
    __________ _____ ______

    Ct. ___ (1993). It is also not a case where a witness has given

    a range, as to amounts or as to trips, but other persuasive

    evidence (e.g., documents or records) exists tending to show that
    ____

    some figure within the range is supported by a preponderance of

    the evidence. Here, to the contrary, the court did not cite, and

    the PSI Report did not identify, any extrinsic evidence or other

    circumstances making averaging peculiarly appropriate or

    suggesting a basis, apart from averaging, on which the probation

    officers' determinations might rest. For our part, we have

    combed the record and unearthed nothing that remotely suggests

    Wallace joined in transporting shipments averaging 556 grams or


    75














    that Rood's shipments averaged twelve to sixteen ounces. In the

    face of timely objection, wholly conclusory findings such as are

    now before us cannot be said to command a preponderance of the

    evidence, and, therefore, cannot support an imposed sentence.

    Cf., e.g., United States v. Shonubi, 998 F.2d 84, 89-90 (2d Cir.
    ___ ____ _____________ _______

    1993) (vacating, in the absence of other evidentiary support,

    district court's drug quantity finding arrived at by rote

    multiplication of number of trips times quantity carried on one

    such trip); United States v. Garcia, 994 F.2d 1499, 1509 (10th
    _____________ ______

    Cir. 1993) (vacating defendant's sentence and holding that

    averages, when used to arrive at drug quantity findings, must be

    "more than a guess"). And the gap in proof is not satisfied by

    showing, as the government seeks to do in its brief, that more

    trips and larger amounts are consistent with the general scale of

    the Sepulveda enterprise.

    Let us be perfectly clear. We do not announce a per se
    ___ __

    rule barring a court from sentencing at a point different than

    the low end of a testified range. There may be other evidence in

    the case, direct or circumstantial, making it more likely than

    not that the low point is simply too low and that some other

    point is more probably representative. Indeed, in some

    situations, the estimate itself, and the contextual detail

    surrounding it, may provide the needed enlightenment. In our

    view, a sentencing court remains free to make judicious use of

    properly constructed averages and, ultimately, to make any

    finding that the record supports. See United States v. Miele,
    ___ _____________ _____


    76














    989 F.2d 659, 664-65 (3d Cir. 1993) (explaining that, where there

    is other evidence tending to buttress the high end of an

    estimated range, the sentencing court need not restrict itself to

    the range's low end); see also U.S.S.G. 6A1.3(a) (stating that
    ___ ____

    the information on which a sentence is based must possess

    "sufficient indicia of reliability to support its probable

    accuracy"). Here, however, the record does not justify the

    district court's findings concerning the drug quantities it

    attributed to Rood and Wallace. Accordingly, because drug

    quantity dictated these appellants' offense levels and at least

    arguably influenced their sentences, Rood and Wallace are

    entitled to be resentenced.31

    C. Kevin Cullinane.
    C. Kevin Cullinane.
    _______________

    After all relevant adjustments had been made, the court

    below established a GSR of 121-151 months referable to appellant

    Cullinane,32 and sentenced him at the range's nadir. This

    determination rested in substantial part on the court's drug


    ____________________

    31On remand, the district court is, of course, free to hear
    new evidence bearing on drug quantity. For example, it may well
    be that better evidence can be adduced by recalling Perez or by
    calling other witnesses. Alternatively, the government has the
    "low point" estimates as to both the number of trips and amounts
    transported to fall back upon and it has some specific evidence
    as to other transactions. To start a mini-trial on drug quantity
    is surely a discouraging supplement to a lengthy trial; but too
    much rides on the computations to rely upon the kind of drug
    quantity calculations that the government urges in respect to
    these two appellants.

    32We do not dissect the interim adjustments made by the
    district court en route to the GSR as Cullinane concentrates his
    fire on the drug quantity finding. We follow this same pattern,
    whenever applicable, in discussing other appellants' sentences.

    77














    quantity assessment. Cullinane challenges this assessment,

    insisting that Judge Devine erred in ascribing 8.99 kilograms of

    cocaine to him.

    Our review of Cullinane's challenge is more

    circumscribed than might appear at first blush. It is

    unnecessary to address an allegedly erroneous sentencing

    computation if, and to the extent that, correcting it will not

    change the applicable offense level or otherwise influence the

    defendant's GSR (and, ultimately, his sentence). See United
    ___ ______

    States v. Connell, 960 F.2d 191, 198 n.11 (1st Cir. 1992);
    ______ _______

    Bradley, 917 F.2d at 604; see also Williams v. United States, 112
    _______ ___ ____ ________ _____________

    S. Ct. 1112, 1121 (1992) (stating that an error in sentencing is

    harmless, and may be disregarded, if it "did not affect the

    district court's selection of the sentence imposed"). This

    principle is pertinent in Cullinane's case: his BOL, and, thus,

    his sentence, will remain unchanged so long as he is responsible

    for an amount of cocaine between five and fifteen kilograms. See
    ___

    U.S.S.G. 2D1.1(c)(6) (Drug Quantity Table). His appeal fails,

    then, if there is record support for ascribing at least five

    kilograms of cocaine to him.

    We find this to be the case. Although the district

    court relied on the testimony of a number of witnesses to

    buttress the drug quantity it attributed to Cullinane, we need

    not go beyond the testimony of David Chase. Chase stated that he

    bought somewhere between five and eight kilograms of cocaine from

    Cullinane. The district court found this testimony credible and


    78














    we, therefore, give it weight. At sentencing, credibility

    determinations are the province of the district court. See
    ___

    United States v. Brewster, 1 F.3d 51, 55 (1st Cir. 1993); St.
    _____________ ________ ___

    Cyr, 977 F.2d at 706; see also 18 U.S.C. 3742(e) (1988). That
    ___ ___ ____

    ends the matter: the lowest of Chase's estimates affords a

    sufficient predicate for the disputed sentence.

    Cullinane attempts to confess and avoid. Even if

    Chase's testimony is reliable, he ruminates, the conduct Chase

    describes is irrelevant to the charged conspiracy. This maneuver

    takes appellant down a blind alley. Within broad limits,

    reviewing courts must defer to a sentencing judge's determination

    of relevant conduct. Such findings are almost invariably

    factbound, and we will set them aside only if they are shown to

    be clearly erroneous. See Garcia, 954 F.2d at 16; Bradley, 917
    ___ ______ _______

    F.2d at 605. In addition, the argument for deference peaks when

    the sentencing judge has presided over a lengthy trial and is

    steeped in the facts of the case. See, e.g., United States v.
    ___ ____ ______________

    Shattuck, 961 F.2d 1012, 1014-15 (1st Cir. 1992); United States
    ________ _____________

    v. Zuleta-Alvarez, 922 F.2d 33, 37 (1st Cir. 1990), cert. denied,
    ______________ _____ ______

    111 S. Ct. 2039 (1991).

    These salutary precepts are dispositive here. Full

    deference is due and Chase's testimony, though circumstantial,

    touched upon, and could logically be found to involve, matters

    coming within the scope of the conspiracy. Accordingly, the

    lower court did not commit clear error in concluding that

    Cullinane's transactions with Chase comprised relevant conduct


    79














    for sentencing purposes.

    D. Arline Welch.
    D. Arline Welch.
    ____________

    The district court attributed 1924 grams of cocaine to

    Arline Welch and imposed the mandatory minimum incarcerative

    sentence under 21 U.S.C. 841(b)(1)(B), viz., five years. Welch
    ____

    contests only the district court's drug quantity assessment.

    Because the mandatory minimum applies so long as quantities of

    cocaine totalling 500 grams or more are involved in the offense

    of conviction, see id., we need only inquire whether that much
    ___ ___

    contraband can fairly be attributed to her.

    We answer this query affirmatively. Perez testified

    that Arline Welch accompanied him on three journeys to Lawrence

    and that 10 ounces of cocaine were acquired on each trip. The

    district court credited Perez's testimony, attributing nearly 900

    grams of cocaine to Arline Welch on this account. We decline

    appellant's invitation to second-guess this finding.

    E. Edward Welch.
    E. Edward Welch.
    ____________

    The district court attributed 7.72 kilograms of cocaine

    to Edward Welch and, after various interim adjustments, sentenced

    him to 135 months in prison (the low end of the GSR). Welch

    challenges only the drug quantity assessment.

    The court's attribution of cocaine to Edward Welch

    rests upon a cornucopia of testimony. It would serve no useful

    purpose to survey it all. Upon careful review of the record, we

    can see, at a minimum, no clear error in the court's decision to

    accept the testimony of Coriaty and Milne testimony that was,


    80














    in itself, sufficient to support the attribution of over 5.3

    kilograms to this defendant.33 At this point, Welch's ground

    of appeal collapses, for his sentence would be the same if the

    court had found 5.3 kilograms rather than 7.72 kilograms. See
    ___

    U.S.S.G. 2D1.1(c)(6) (Drug Quantity Table).

    F. Cheryl Johnson.
    F. Cheryl Johnson.
    ______________

    The lower court attributed 1.2 kilograms of cocaine to

    Cheryl Johnson and imposed the mandatory minimum five-year

    sentence. See 21 U.S.C. 841(b)(1)(B). Johnson disputes the
    ___

    drug quantity finding. Here, again, the trigger amount is 500

    grams of cocaine. See id.
    ___ ___

    The district court determined, inter alia, that Johnson
    _____ ____

    sold 1/16th of an ounce of cocaine to Santos on at least 100

    occasions; and that she sold 3/10s of an ounce to officer Malone

    on another occasion. The court further found that $7,115 seized

    from Johnson's house constituted the proceeds of drug sales and,

    for sentencing purposes, equated this cash stash with 5.08 ounces

    of cocaine. Finally, the court credited Perez's testimony that

    Johnson participated in at least "a couple" of drug-buying

    expeditions. Erring on the side of caution, the court could

    warrantably have found Johnson responsible for two trips,





    ____________________

    33At the risk of carrying coal to Newcastle, we note that
    Edward Welch was a fellow traveller on, and a co-venturer in,
    several drug-buying expeditions described supra Part XI(D).
    _____
    Thus, the drug quantities associated with those jaunts are also
    attributable to him.

    81














    involving four ounces per trip.34 In the aggregate, the

    determinations listed above support the attribution of 556 grams

    of cocaine to Johnson more than the minimum required to

    underbrace the sentence she received.

    Johnson argues against these serial findings on three

    grounds. Her first attack a broadside blast aimed at the total

    quantity of cocaine attributed to her deserves little comment.

    We simply restate the obvious: the district court's credibility

    calls are beyond reproach and, therefore, its bottom-line

    conclusion is not clearly erroneous.

    Johnson's second fusillade is aimed at the cash

    equivalency finding. In drawing a head on the sentencing court's

    decision to translate dollars into drugs, Johnson is shooting

    blanks. The government presented abundant evidence of Johnson's

    narcotics trafficking, see supra Part II(D), and the volume of
    ___ _____

    business transacted justified the court's illation that the sums

    seized were connected to her drug dealings. When it is

    reasonably probable that confiscated cash represents either drug

    profits or money dedicated to the upcoming purchase of

    contraband, a sentencing court may convert the cash into

    equivalent amounts of narcotics for "relevant conduct" purposes.

    See U.S.S.G. 2D1.4, comment. (n.2) (authorizing district courts
    ___

    to use price as a means of approximating drug quantity); see also
    ___ ____

    ____________________

    34The court actually found that Johnson's two trips involved
    16 ounces per trip. But, this finding utilized an impermissible
    process of rote averaging. See supra Part XI(B). Hence, we use
    ___ _____
    the low end of the range of available estimates for purposes of
    appellate review.

    82














    United States v. Jackson, 3 F.3d 506, 510 (1st Cir. 1993); United
    _____________ _______ ______

    States v. Figueroa, 976 F.2d 1446, 1460-61 (1st Cir. 1992), cert.
    ______ ________ _____

    denied, 113 S. Ct. 1346 (1993); United States v. Gerante, 891
    ______ ______________ _______

    F.2d 364, 369 (1st Cir. 1989). So it is here.

    Johnson's third salvo also flies wide of the target.

    She insists that the cash did not belong to her and, thus, cannot

    figure in her sentence. But as we read the record, the

    circumstantial evidence supports a finding of proprietary

    interest. And, moreover, even if we were to give credence to

    Johnson's protest regarding ownership, the cash equivalency

    evidence could be used against her as long as the drug money

    constituted part of the same common scheme or plan and met the

    foreseeability requirement for relevant conduct under the

    guidelines. See Garcia, 954 F.2d at 15; Blanco, 888 F.2d at 910-
    ___ ______ ______

    11; see also supra Part XI(A) (discussing relevant conduct in
    ___ ____ _____

    conspiracy cases). The evidence here could reasonably be

    interpreted as placing the cash stash within the orbit of the

    conspiracy. For these reasons, we detect no clear error in the

    lower court's conclusion that the money ought properly to be

    treated as a proxy for cocaine and counted against this

    appellant.

    Johnson has two final items in her asseverational

    array. She asserts that the court should have reduced her BOL by

    two levels since she was merely a minor participant in the drug

    distribution scheme, see U.S.S.G. 3B1.2(b), and that the court
    ___

    should have departed downward due to her family circumstances.


    83














    Neither assertion has much firepower.

    As to the former plaint, a role-in-the-offense

    reduction, even if granted, would have no effect on appellant's

    sentence due to the overriding force of the mandatory minimum

    prescribed by 21 U.S.C. 841(b)(1)(B). See U.S.S.G. 5G1.1(b)
    ___

    (providing that the statutorily required minimum sentence shall

    be the guideline sentence when it exceeds the top of the

    applicable GSR). The assignment of error is, therefore, moot.

    As to Johnson's last point, it is settled in this

    circuit that a sentencing judge's informed decision not to

    depart, regardless of direction, is a non-appealable event. See
    ___

    United States v. Tardiff, 969 F.2d 1283, 1290 (1st Cir. 1992);
    _____________ _______

    United States v. Hilton, 946 F.2d 955, 957 (1st Cir. 1991).
    ______________ ______

    There is nothing about appellant's case that extricates it from

    the vice-like grip of this jurisdictional rule. In any event,

    appellant failed to seek a departure below and, hence, cannot

    broach the matter for the first time on appeal. See Ortiz, 966
    ___ _____

    F.2d at 717 (reiterating rule that appellate court will not

    address sentencing arguments that were not seasonably advanced

    below); United States v. Dietz, 950 F.2d 50, 55 (1st Cir. 1991)
    _____________ _____

    (similar).

    XII. CONCLUSION
    XII. CONCLUSION

    We need go no further. After considering all the

    issues raised by appellants, including some issues not

    specifically discussed herein, we have unearthed no vestige of

    reversible error. Appellants' convictions and sentences are


    84














    therefore lawful, save only for the sentences imposed on Rood and

    Wallace. Accordingly, we affirm the convictions of those two

    appellants, vacate their sentences, and remand for resentencing.

    At the same time, we affirm the convictions and sentences of the

    other eight appellants. We stay issuance of mandate in all the

    appeals, pending publication of the two additional (and closely

    related) opinions described supra note 2.
    _____



    The convictions and sentences of appellants David
    The convictions and sentences of appellants David
    _______________________________________________________

    Sepulveda, Edgar Sepulveda, Edward W. Welch, Jr., Arline S.
    Sepulveda, Edgar Sepulveda, Edward W. Welch, Jr., Arline S.
    _________________________________________________________________

    Welch, Kevin Cullinane, Cheryl T. Johnson, Richard F. Labrie, and
    Welch, Kevin Cullinane, Cheryl T. Johnson, Richard F. Labrie, and
    _________________________________________________________________

    Ernest F. Langlois are affirmed in all respects. The convictions
    Ernest F. Langlois are affirmed in all respects. The convictions
    _______________________________________________ _______________

    of appellants Tony Rood and William D. Wallace are affirmed,
    of appellants Tony Rood and William D. Wallace are affirmed,
    _________________________________________________________________

    their sentences are vacated, and, as to those appellants only,
    their sentences are vacated, and, as to those appellants only,
    _________________________________________________________________

    the case is remanded for resentencing. The issuance of mandate
    the case is remanded for resentencing. The issuance of mandate
    ______________________________________ ________________________

    is stayed pending further order of the court.
    is stayed pending further order of the court.
    ____________________________________________






















    85







Document Info

Docket Number: 92-1362

Filed Date: 12/20/1993

Precedential Status: Precedential

Modified Date: 9/21/2015

Authorities (107)

united-states-v-angel-luis-figueroa-united-states-of-america-v-tomas , 976 F.2d 1446 ( 1992 )

United States v. Claudia O'campo, United States v. Julian ... , 973 F.2d 1015 ( 1992 )

United States v. Joseph Capone, United States of America v. ... , 683 F.2d 582 ( 1982 )

Rawlings v. Kentucky , 100 S. Ct. 2556 ( 1980 )

Daubert v. Merrell Dow Pharmaceuticals, Inc. , 113 S. Ct. 2786 ( 1993 )

united-states-v-robert-d-cresta-united-states-of-america-v-john-j , 825 F.2d 538 ( 1987 )

United States v. William W. Lilly , 983 F.2d 300 ( 1992 )

United States v. Hojatollah Tajeddini , 996 F.2d 1278 ( 1993 )

United States v. Johnny Rafael Batista-Polanco , 927 F.2d 14 ( 1991 )

United States v. Julio Ernesto Arias-Santana , 964 F.2d 1262 ( 1992 )

United States v. Dalton Green , 887 F.2d 25 ( 1989 )

United States v. Jay Lewis Dworken, A/K/A Jason Lewis, Jay ... , 855 F.2d 12 ( 1988 )

United States v. John L. St. Cyr , 977 F.2d 698 ( 1992 )

Lawn v. United States , 78 S. Ct. 311 ( 1958 )

United States v. Jose Manuel De La Cruz A/K/A Jose Manuel ... , 902 F.2d 121 ( 1990 )

Geders v. United States , 96 S. Ct. 1330 ( 1976 )

Carlos A. Gutierrez-Rodriguez v. Desiderio Cartagena and ... , 882 F.2d 553 ( 1989 )

United States v. Barbara Hilton , 946 F.2d 955 ( 1991 )

Giglio v. United States , 92 S. Ct. 763 ( 1972 )

United States v. Frances Slade , 980 F.2d 27 ( 1992 )

View All Authorities »