United States v. Gerald Eiland ( 2013 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued October 4, 2013             Decided December 27, 2013
    Nos. 07-3131 & 11-3001
    UNITED STATES OF AMERICA,
    APPELLEE
    v.
    GERALD W. EILAND,
    FREDERICK MILLER,
    APPELLANTS
    Appeals from the United States District Court
    for the District of Columbia
    (No. 04cr00379-01)
    (No. 04cr00379-02)
    Eric H. Kirchman argued the cause for appellant Gerald
    W. Eiland. With him on the briefs was Kenneth M. Robinson.
    Dennis M. Hart argued the cause and filed the briefs for
    appellant Frederick Miller.
    Frederick A. Miller, pro se, filed the briefs for appellant
    Frederick Miller.
    Katherine M. Kelly, Assistant U.S. Attorney, argued the
    cause for appellee. With her on the brief were Ronald C.
    Machen, Jr., U.S. Attorney, and Elizabeth Trosman, Suzanne
    2
    Grealy Curt, and John K. Han, Assistant U.S. Attorneys.
    Mary B. McCord, Assistant U.S. Attorney, entered an
    appearance.
    Before: GARLAND, Chief Judge, and ROGERS and
    BROWN, Circuit Judges.
    Opinion for the Court by Circuit Judge BROWN.
    BROWN, Circuit Judge: Appellants, Gerald Eiland and
    Frederick Miller, were convicted of various narcotics-related
    offenses. The government’s evidence at trial showed that
    Eiland and Miller organized an extensive drug ring in the
    Washington, D.C. area that had ties across the country. After
    almost a year and a half of investigation including numerous
    wiretaps, the government indicted twenty-one defendants.
    Many of the defendants pled guilty. The government brought
    the remaining defendants to trial in two groups. This appeal
    results from the second of these trials. We also heard an
    appeal from the first trial, United States v. Miller, Nos. 07-
    3135 & 07-3139, and we have disposed of those issues in
    another opinion released today.
    Eiland and Miller allege numerous errors affecting the
    second trial.    Although we reject most of appellants’
    arguments, we vacate Miller’s insufficiently supported
    conviction for his participation in a continuing criminal
    enterprise and remand for resentencing. We also vacate the
    fine imposed on Eiland by the district court and remand for
    reconsideration of that portion of Eiland’s sentence.
    I. Facts and Procedural History
    Our opinion in the companion case sets out the factual
    and procedural background of this case in some detail. We
    3
    need not retell that story here, and we limit our discussion to
    facts relevant to the second trial and this appeal.
    Sometime in 2003, the Safe Streets Task Force of the FBI
    began investigating a drug trafficking ring in Southeast
    Washington, D.C. The evidence revealed a wide-ranging
    drug operation headed by Eiland and Miller. The operation
    dealt in heroin, cocaine, cocaine base, and phencyclidine
    (PCP) and had ties around the country and to foreign
    travelers. On February 13, 2004, the task force applied for
    and was granted court authorization to wiretap Miller’s cell
    phone. The court approved two extensions and the wiretap
    lasted three months. In April, the district court permitted the
    task force to tap Eiland’s three phones and approved an
    extension for one of those phones. FBI Agent Daniel Sparks
    provided supporting affidavits for each of the initial wiretap
    and extension applications. Although the conspirators often
    used untapped payphones to discuss their illicit activities and
    spoke in guarded language while on the wiretapped phones,
    the FBI obtained substantial evidence from the wiretaps.
    Following a “reverse sting” operation, the FBI arrested Eiland
    and Miller in August 2004. The government charged twenty-
    one defendants in a 100-count superseding indictment. The
    defendants were charged with conspiring to distribute heroin,
    cocaine, cocaine base, and PCP between 1999 and 2004 in
    Virginia, the District of Columbia, and Maryland.
    The defendants who did not plead guilty were separated
    into two groups for trial. Prior to the first trial, many of the
    defendants, including Eiland and Miller, moved to suppress
    the wiretap evidence because, they argued, the authorization
    violated the wiretap statute, 18 U.S.C. § 2510 et seq. The
    district court denied defendants’ motions. United States v.
    Eiland, 
    398 F. Supp. 2d 160
    (D.D.C. 2005). The government
    4
    relied heavily on the more than 14,000 recorded telephone
    conversations at both trials.
    The first trial group, consisting of Frederick Miller,
    Timothy Thomas, and Corey Moore, went to trial in March
    2006. The trial lasted two months, and the jury deliberations
    lasted a month. Thomas was convicted of most charges,
    including conspiring to commit a narcotics offense (cocaine)
    and RICO conspiracy. Moore was acquitted of all charges.
    Miller was found guilty of twenty-one counts of using a
    communication device to facilitate a drug-trafficking offense.
    The jury acquitted Miller of a count of PCP distribution and
    several counts of communication offenses. The jury was
    hung on the remaining counts against Miller, and the judge
    declared a mistrial on those.
    Following the mistrial, the government moved to join
    Miller to the second group of defendants, scheduled to go to
    trial in October 2006. Miller opposed the motion because his
    court-appointed counsel from the first trial, Brian McDaniel,
    was unavailable. Rather than delay the trial of the entire
    second group or hold a separate trial for Miller, the court
    appointed Thomas Saunders to represent Miller.
    On October 3, 2006, the second group of defendants—
    Robert Bryant, Alvin Gaskins, Gerald Eiland, and Frederick
    Miller—proceeded to trial. On November 15, 2006, the jury
    acquitted Bryant, the alleged PCP supplier for the conspiracy,
    of all charges. The jury found Gaskins guilty of narcotics
    conspiracy with regard to heroin only and acquitted Gaskins
    of all other charges. This court later reversed Gaskins’s
    conviction as resting upon insufficient evidence. United
    States v. Gaskins, 
    690 F.3d 569
    (D.C. Cir. 2012). The jury
    found Eiland guilty of narcotics conspiracy (Count 1) with the
    object of distributing heroin, cocaine, and cocaine base, but
    5
    not PCP; RICO conspiracy (Count 2); continuing criminal
    enterprise (CCE) (Count 3); attempt to possess with intent to
    distribute heroin (Count 4); and three counts of unlawful use
    of a communication facility. The jury found Eiland not guilty
    of six other communications counts and an accessory to
    murder charge. Miller was convicted of narcotics conspiracy
    (Count 1) with regard to heroin, cocaine, and cocaine base,
    but not with regard to PCP; RICO conspiracy (Count 2); CCE
    (Count 3); attempt to possess with intent to distribute heroin
    (Count 5); and three counts of unlawful use of a
    communication facility. The jury found Miller not guilty of
    attempt to possess with intent to distribute PCP and five
    additional communications counts.
    Thus, the jury found the government had proved Miller
    and Eiland conspired to traffic heroin, cocaine, and cocaine
    base and committed the racketeering acts and CCE predicate
    offenses involving those same narcotics. But the jury found
    the government had not proved the charged offenses and acts
    involving the trafficking of PCP.
    At appellants’ sentencing hearings, the district court
    dismissed the narcotics conspiracy charges against Miller and
    Eiland as lesser-included offenses of the CCE counts. The
    court sentenced each to concurrent sentences of life
    imprisonment for RICO conspiracy and CCE, and lesser
    terms of imprisonment on the other counts. The court
    imposed a $7,000 fine on Miller for Counts 2 and 3.
    Sentencing (Miller) Tr. at 7, Nov. 28, 2007. 1 It imposed a
    1
    The written judgment form for Miller states that the fine is
    imposed on Counts 1 and 2. This appears to be a mistake because
    the district court vacated Count 1 (narcotics conspiracy).
    Furthermore, “the pronouncement of the sentence constitutes the
    judgment of the court” and “the written judgment form is a nullity
    6
    $7,000 fine on Eiland for Count 1. Sentencing (Eiland) Tr. at
    11, Nov. 28, 2007. Eiland and Miller filed timely notices of
    appeal. This court decided to hear the appeal arising out of
    the second trial separately from the appeal of the first trial. 2
    II. Admissibility of Wiretap Evidence
    Eiland and Miller cite several reasons the wiretap
    evidence should have been suppressed. We address these
    arguments in turn.
    An application for an order authorizing a wiretap must
    contain certain information, including “a full and complete
    statement of the facts and circumstances relied upon by the
    applicant, to justify his belief that an order should be issued.”
    18 U.S.C. § 2518(1). A district court may authorize a wiretap
    after assessing both probable cause and necessity and finding:
    (1) probable cause exists to believe that an individual has
    committed or is about to commit one of certain
    enumerated offenses; (2) probable cause exists to believe
    that particular communications concerning that offense
    will be obtained through an interception; (3) normal
    investigative procedures have been tried and have failed
    or reasonably appear to be unlikely to succeed if tried;
    and (4) probable cause exists to believe that the
    communication facility sought to be wiretapped is being
    used, or is about to be used, in connection with the
    commission of the offense.
    United States v. Carter, 
    449 F.3d 1287
    , 1292 (D.C. Cir. 2006)
    (citing 18 U.S.C. § 2518(3)). An initial wiretap may be
    to the extent it conflicts with the previously pronounced sentence.”
    United States v. Love, 
    593 F.3d 1
    , 9 (D.C. Cir. 2010).
    2
    Miller is also a party in the related appeal from the first trial.
    7
    approved for a maximum of thirty days and may be extended
    for additional thirty-day periods upon a finding of continued
    probable cause and necessity. 18 U.S.C. § 2518(3), (5).
    The probable cause standard for the wiretap statute is the
    same as the standard for a search warrant. See United States
    v. Fairchild, 
    189 F.3d 769
    , 775 (8th Cir. 1999); United States
    v. Diaz, 
    176 F.3d 52
    , 110 (2d Cir. 1999); United States v.
    Armendariz, 
    922 F.2d 602
    , 608 (10th Cir. 1990); United
    States v. Nixon, 
    918 F.2d 895
    , 900 (11th Cir. 1990). The
    determination requires the authorizing court “to make a
    practical, common-sense decision whether, given all the
    circumstances set forth in the affidavit before [it], including
    the ‘veracity’ and ‘basis of knowledge’ of persons supplying
    hearsay information, there is a fair probability that contraband
    or evidence of a crime will be found in a particular place.”
    Illinois v. Gates, 
    462 U.S. 213
    , 238 (1983).
    The necessity requirement is satisfied if “traditional
    investigative techniques have proved inadequate to reveal the
    operation’s full nature and scope.” United States v. Becton,
    
    601 F.3d 588
    , 596 (D.C. Cir. 2010).             The necessity
    requirement prevents law enforcement from resorting to
    wiretapping where traditional investigative techniques would
    suffice. 
    Carter, 449 F.3d at 1293
    . “[A] court will give close
    scrutiny to a contested wiretap application and will reject
    generalized and conclusory statements that other investigative
    procedures would prove unsuccessful.” 
    Id. But because
    the
    necessity requirement was not intended “to foreclose
    electronic surveillance until every other imaginable method of
    investigation has been unsuccessfully attempted,” the
    government need only show “that other techniques are
    impractical under the circumstances and that it would be
    unreasonable to require pursuit of those avenues of
    investigation.” 
    Id. 8 In
    evaluating appellants’ objections to the district court’s
    denial of their motions to suppress, we review the district
    court’s legal conclusions de novo and its factual findings for
    clear error. United States v. Johnson, 
    437 F.3d 69
    , 71 (D.C.
    Cir. 2006). A reviewing court gives deference to the
    authorizing court’s determinations of probable cause and
    necessity. United States v. Glover, 
    681 F.3d 411
    , 419–20
    (D.C. Cir. 2012); 
    Johnson, 437 F.3d at 71
    . We review the
    court’s necessity determination for abuse of discretion.
    United States v. Sobamowo, 
    892 F.2d 90
    , 93 (D.C. Cir. 1989).
    We “do[] not typically give a second layer of deference to a
    district court’s assessment” of the authorizing court’s
    determinations. 
    Glover, 681 F.3d at 420
    .
    A.
    Appellants first argue the initial application for a wiretap
    on Miller’s phone was inadequate because Agent Sparks’s
    supporting affidavit contained “boilerplate” language
    incompatible with the particularized facts required to establish
    probable cause. Appellants’ argument is unavailing. Even if
    the affidavit does contain some general language,
    “[a]pplications are not to be read in a piecemeal fashion.”
    United States v. Williams, 
    580 F.2d 578
    , 589 (D.C. Cir. 1978).
    Sparks’s affidavit contains specific facts regarding the
    locations where drug transactions took place, see, e.g., Sparks
    Aff. 15–16, Feb. 13, 2004, Appellants’ App’x 272–73, and
    the quantities of drugs and money observed by confidential
    informants, see, e.g., 
    id. at 16–18,
    Appellants’ App’x 273–75.
    The affidavit also contains particularized facts regarding the
    phone to be tapped. These facts are sufficient to establish
    probable cause despite the fact that the phone’s subscription
    was not in Miller’s name. See, e.g., 
    id. at 21–23,
    Appellants’
    App’x 278–80 (explaining that confidential informants had
    described phone calls with Miller regarding drug activity and
    9
    that toll record and pen register analyses confirmed those
    phone calls were made on the subject phone); 
    id. at 5–6,
    Appellants’ App’x 262–63 (stating that although the phone
    subscription was not in Miller’s name, the investigation had
    shown the phone was regularly used by Miller). The initial
    wiretap application contained particularized facts sufficient to
    establish each of the three probable cause requirements under
    the wiretap statute.      See 
    Williams, 580 F.2d at 589
    (“[S]ections of the affidavits are framed in conclusory
    terminology, but they cannot rationally be separated from the
    preceding detailed descriptions of the investigative events.”).
    B.
    Appellants also argue agents lacked probable cause to
    support an extension of the Miller wiretap. Agent Sparks’s
    affidavit states FBI agents had discovered Miller sometimes
    used payphones to discuss drug activity in order to avoid
    being picked up by any wiretaps. Sparks Aff. 19–20, Mar. 17,
    2004, Appellants’ App’x 338–39. According to appellants,
    this finding vitiates any determination that there was probable
    cause to believe continued wiretaps would lead to the
    discovery of relevant communications. But Sparks’s affidavit
    also contained plenty of examples of relevant calls picked up
    during the initial wiretap period.         See 
    id. at 16–17,
    Appellants’ App’x 335–36 (describing conversations in which
    Miller agreed to send a courier to California and discussions
    regarding how to escape fraud detection at airports); 
    id. at 21,
    Appellants’ App’x 340 (describing a call in which one
    participant accidently referred to heroin without using coded
    language). Although the wiretaps were less successful
    because the defendants used payphones to escape detection,
    Sparks’s extension affidavits demonstrated that the wiretaps
    did have some value to the investigation. See United States v.
    Giordano, 
    416 U.S. 505
    , 532–33 (1974) (where a wiretap
    10
    extension application shows that the wiretap produced results
    during the initial period, there is probable cause to believe the
    wiretap will continue to pick up communications concerning
    the offenses being investigated). The extension authorizations
    were supported by probable cause.
    C.
    Eiland and Miller next argue the initial wiretap
    application for Miller’s phone did not satisfy the necessity
    requirement. They note the government had numerous
    cooperating witnesses and informants who were able to
    provide the government with adequate high-level inside
    information, and they complain the wiretap applications also
    did not explain why physical surveillance, pen registers, or
    toll-record analyses were inadequate to achieve the
    government’s investigatory goals.
    Agent Sparks’s initial Miller affidavit provides detailed
    information about aspects of the conspiracy learned from
    cooperating witnesses. Sparks noted the FBI had attempted to
    obtain additional high-level informants but had not succeeded.
    See Sparks Aff. 28, Feb. 13, 2004, Appellants’ App’x 285
    (noting the government offered Cinquan Blakney an
    opportunity to cooperate but he declined). The affidavit also
    states that no informants could safely provide other detailed
    information including: (a) the means by which the drugs were
    obtained; (b) the manner and timetable of shipments; (c) the
    locations where drugs and illegally obtained assets were
    hidden; or (d) the manner in which the defendants concealed
    their activities. 
    Id. at 53,
    Appellants’ App’x 310. The
    affidavit is sufficiently detailed with regard to both the
    information obtained, and the type of information not
    obtainable, from informants.
    11
    Appellants say Victoria Owens (CW5) was a high-level
    informant who could give the government any necessary
    information about the conspiracy.         But the affidavit
    demonstrates that even Owens did not have access to the most
    closely held secrets. Owens was not one of the few trusted
    people to whom Miller gave his phone number. 
    Id. at 22–23,
    Appellants’ App’x 279–80; see 
    Carter, 449 F.3d at 1294
    (wiretap affidavit adequately demonstrated necessity where it
    stated reasons why use of undercover informants would be
    inadequate to reveal the full nature and scope of the drug
    conspiracy).    Furthermore, Owens would have been a
    problematic witness at trial—she was a known drug-user who
    was cooperating with the government as part of a plea
    agreement. It was reasonable for the government to seek
    wiretap evidence that would corroborate Owens’s information
    and convince a jury at trial. See Sparks Aff. 52, Feb. 13,
    2004, Appellants’ App’x 309 (stating that wiretaps were
    needed to establish proof beyond a reasonable doubt).
    Sparks’s affidavit also explained that the conspirators
    were adept at detecting physical surveillance and had moved
    away from the area previously captured by a pole camera. 
    Id. at 49–51,
    Appellants’ App’x 306–08. While the use of a pen
    register had provided some information to the FBI, it could
    not convey to the government the substance of Miller’s calls.
    
    Id. at 58–59,
    Appellants’ App’x 315–16.
    In sum, the wiretap applications described the relevant
    evidence that had been gathered through the use of traditional
    investigative techniques. The government was not obligated
    to include in the applications every detail known to it
    concerning the conspiracy. See United States v. Maynard,
    
    615 F.3d 544
    , 550 (D.C. Cir. 2010) (“At best, the appellants
    suggest investigative techniques that might have provided
    some of the evidence needed, but they give us no reason to
    12
    doubt the district court’s conclusion that having engaged in an
    adequate range of investigative endeavors, the government
    properly sought wiretap permission and was not required to
    enumerate every technique or opportunity missed or
    overlooked.”); 
    Becton, 601 F.3d at 597
    (holding that various
    omissions from the wiretap affidavits did not undermine the
    government’s necessity showing because the omissions were
    not material and the government had “adequately
    demonstrated the failure of normal investigative techniques to
    reveal the full nature and scope of the conspiracy”). It
    adequately demonstrated that traditional investigative
    techniques had been employed and holes remained in the
    evidence that could only reasonably be filled by a wiretap.
    The authorizing court did not abuse its discretion in finding
    that a wiretap was necessary for the government’s
    investigation.
    D.
    Appellants contend information discovered after the
    district court denied their motions to suppress demonstrates
    the wiretap applications contained critical misstatements that
    made an accurate determination of probable cause and
    necessity impossible. Specifically, appellants discovered that
    the cooperating witness referred to in the wiretap applications
    as CW5 was Victoria Owens, who shared a house with Miller.
    Appellants say if they had known CW5’s identity, they could
    have successfully argued before the district court that the
    government had failed to provide the authorizing court with
    salient information undermining CW5’s credibility. The
    government purposely concealed Owens’s identity, according
    to appellants, so as not to undermine the evidence establishing
    probable cause. Appellants also make a contradictory
    argument. Because Owens was a trusted confidant of the
    drug conspiracy’s leaders and could obtain valuable inside
    13
    information, the government was not able to show that a
    wiretap was necessary. Both arguments fail.
    Appellants did not raise these arguments before the
    district court in their motion to suppress, nor did they renew
    that motion after they learned of CW5’s identity. Thus, the
    arguments were forfeited and our review is only for plain
    error. See United States v. Olano, 
    507 U.S. 725
    , 732–35
    (1993). Owens’s identity was not hidden from the authorizing
    judge. See Notice 1, Feb. 13, 2004, D.D.C. Misc. No. 04-64,
    Gov’t Supplemental App’x 1. The authorizing court had the
    information necessary to evaluate Owens’s credibility,
    including information concerning her drug use, her past
    untruthful testimony, and her cooperation agreement with the
    government. Appellants offer no reason for the court to
    conclude that further information about Owens would have
    altered the court’s determination of her credibility or
    otherwise undermined its finding of probable cause.
    Additionally, there was enough evidence aside from that
    supplied by Owens to establish probable cause. With regard
    to the necessity determination, the government described
    information to which Owens did not have access and showed
    that a wiretap was necessary despite her cooperation. Thus,
    the omissions affected neither the determination of probable
    cause nor the determination of necessity. See 
    Becton, 601 F.3d at 597
    .
    Moreover, the defendants did not request disclosure of
    CW5’s identity in support of their request for a Franks
    hearing. 3 Because appellants failed to seek that disclosure
    3
    When the defendants filed their motions to suppress, they also
    requested a hearing pursuant to Franks v. Delaware, 
    438 U.S. 154
    ,
    155–56 (1978), to inquire whether Agent Sparks had intentionally
    or recklessly included a material false statement in the wiretap
    affidavit. However, the statements defendants alleged were false
    14
    and did not argue before the district court that the government
    improperly masked CW5’s identity, that argument is also
    forfeited on appeal. See Flynn v. Comm’r, 
    269 F.3d 1064
    ,
    1068–69 (D.C. Cir. 2001) (“Generally, an argument not made
    in the lower tribunal is deemed forfeited and will not be
    entertained absent exceptional circumstances.”). 4 Appellants
    have not demonstrated that either the masking of Owens to
    protect her from retaliation or the district court’s failure to
    hold a Franks hearing on the basis of that masking affected
    their substantial rights. See 
    Olano, 507 U.S. at 734
    .
    E.
    Appellants’ final argument with regard to the wiretap
    evidence is that the authorizing court should not have
    authorized extensions where, appellants contend, the
    government did not describe the investigation’s progress in its
    extension applications. An application for an extension must
    include “a statement setting forth the results thus far obtained
    from the interception, or a reasonable explanation of the
    failure to obtain such results.” 18 U.S.C. § 2518(1)(f). The
    purpose of this provision is to “permit the court realistically to
    were unrelated to CW5’s identity or credibility. Appellants do not
    allege the district court erred by denying the motion for a Franks
    hearing based on the arguments actually presented to it.
    4
    Appellants also argue that by not listing CW12, who Miller asserts
    is Rashawn Briggs, in the initial wiretap application affidavit, the
    government omitted the critical fact that a knowledgeable and
    trusted insider was cooperating, thus preventing the authorizing
    court from making a reliable finding of necessity. But the record
    shows that Briggs was in a halfway house from January 16, 2004 to
    March 5, 2004. Oct. 19, 2006 AM Trial Tr. at 11. Briggs was not
    mentioned in the initial February 13, 2004 affidavit because he was
    not able to provide assistance to the investigation until he left the
    halfway house. See 
    id. at 106.
                                  15
    appraise the probability that relevant conversations will be
    overheard in the future.” 
    Giordano, 416 U.S. at 532
    . Each of
    the government’s extension applications includes a lengthy
    “summary of pertinent calls.” See, e.g., Sparks Aff. 13–33,
    Mar. 17, 2004, Appellants’ App’x 332–52.            Sparks’s
    affidavits detail the results of the wiretaps and the
    shortcomings of continued traditional investigative
    techniques. The extension applications demonstrated that the
    wiretaps were producing results and thus established
    continuing probable cause. See 
    Giordano, 416 U.S. at 532
    –
    33. The authorizing court did not err in granting the
    government’s applications for extensions.
    III. Overview Witness Testimony
    The district court erred, appellants say, by permitting
    government witnesses to give improper overview testimony.
    The government’s first witness at trial was FBI Agent John
    Bevington. Agent Bevington testified as an expert on
    investigations of illegal conspiracy cases. Oct. 4, 2006 AM
    Trial Tr. at 11–12. Specifically, Agent Bevington began his
    testimony with a definition of conspiracy 5 and explained
    conspiracies are conducted secretly, often using coded
    language. 
    Id. at 14–17.
    Agent Bevington also testified about
    investigative techniques, like controlled drug buys, search
    warrants, surveillance, and interviews. 
    Id. at 19–26.
    He
    described the procedure for obtaining a search warrant and
    authorization for a wiretap and explained how the FBI
    monitors a wiretap. 
    Id. at 25–33.
    Appellants complain this
    background testimony was erroneously admitted because it
    was unrelated to matters beyond a lay jury’s understanding
    and would not help the jury “to understand the evidence or to
    determine a fact in issue.” FED. R. EVID. 702.
    5
    Agent Bevington testified that a conspiracy is “an agreement
    between two or more people to commit criminal acts.” 
    Id. at 14.
                                  16
    Agent Bevington’s background testimony was properly
    admitted. “The operations of narcotics dealers repeatedly
    have been found to be a suitable topic for expert testimony
    because they are not within the common knowledge of the
    average juror.” United States v. Boney, 
    977 F.2d 624
    , 628
    (D.C. Cir. 1992); see also United States v. Perez, 
    280 F.3d 318
    , 341–42 (3d Cir. 2002) (permitting expert testimony
    regarding drug traffickers’ use of cell phones and pagers to
    frustrate police investigations); United States v. Gil, 
    58 F.3d 1414
    , 1421–22 (9th Cir. 1995) (permitting modus operandi
    testimony about drug traffickers’ counter-surveillance
    techniques because “[s]uch evidence helps the jury
    understand complex criminal activities, and alerts it to the
    possibility that combinations of seemingly innocuous events
    may indicate criminal behavior”); United States v. Tapia-
    Ortiz, 
    23 F.3d 738
    , 741 (2d Cir. 1994) (“[T]he Government
    was justified in introducing expert testimony explaining that
    drug traffickers employ certain techniques, such as using
    beepers, cash, and nicknames, in order to avoid detection.”).
    Courts have also permitted law enforcement agents to testify
    as experts on investigative techniques. Cf. United States v.
    Miller, Nos. 07-3135 & 07-3139, slip op. at 11 (D.C. Cir.
    Dec. 27, 2013) (FBI Agent Sparks’s lay testimony about
    investigative techniques would not have been error had
    Sparks testified as an expert).
    Agent Bevington’s testimony fits within the type of
    modus operandi expert testimony permitted by this and other
    courts, and his description of investigative techniques
    provided useful background information. The district court’s
    admission of this testimony—which aided the jury in
    assessing the quality of the evidence—was not error. 6
    6
    Even if Agent Bevington’s testimony had introduced error,
    appellants have not alleged any prejudice as a result.
    17
    Appellants also argue Agent Bevington improperly
    vouched for the cooperating witnesses. Agent Bevington
    explained information given by a cooperating witness was
    usually corroborated by the FBI: “[E]ven if we don’t know it
    at that particular time, we have the ability to investigate
    anything they tell us and determine whether or not they are
    being truthful and accurate.” Oct. 4, 2006 AM Trial Tr. at 34;
    see also 
    id. at 37
    (“Before the government will agree to the
    plea agreement . . . we’re going to know the information
    they’re providing is correct or we’re going to go out and
    conduct further investigation to determine what they have
    been telling us is correct.”). Agent Bevington described the
    various corroborative techniques. 
    Id. at 37–38.
    However,
    testifying as an expert witness, he disclaimed any specific
    knowledge regarding the cooperating witnesses in this case;
    he spoke only about the process of obtaining cooperating
    witnesses generally. 
    Id. at 44–45.
    Defendants’ motion in limine to limit the testimony of the
    government’s expert witnesses did not address the errors
    claimed on appeal. See Eiland Mot. in Limine, July 15, 2006,
    D.D.C. 04-379, ECF No. 697. Defendants’ motion asked the
    court to order the government to comply with Federal Rule of
    Criminal Procedure 16(a)(1)(G) by giving the defendants a
    written summary of the proposed witness testimony. 7 
    Id. Eiland also
    requested limitations on the breadth and scope of
    expert testimony, asking that the experts not be allowed to act
    as “super-narrators who guide the jury through the evidence
    in a manner that combines hearsay, frustrates cross-
    examination, and usurps the jury’s function.” 
    Id. at 3.
    At no
    point did any of the defendants object to Agent Bevington’s
    7
    Defendants’ objection at trial similarly only concerned the
    government’s compliance with Rule 16(a)(1)(G). Oct. 4, 2006 AM
    Trial Tr. at 13–14.
    18
    testimony regarding the development or credibility of
    cooperating witnesses. Therefore, we review this portion of
    Agent Bevington’s testimony for plain error. See United
    States v. Brown, 
    508 F.3d 1066
    , 1068 (D.C. Cir. 2007).
    To establish plain error, appellants must show there was
    “(1) a legal error that was (2) ‘plain’ (a term that is
    synonymous with ‘clear’ or ‘obvious’), and that (3) affected
    [their] substantial rights.” United States v. Wilson, 
    605 F.3d 985
    , 1022 (D.C. Cir. 2010). Even when plain error is
    demonstrated, “we . . . reverse only if (4) the error seriously
    affects the fairness, integrity, or public reputation of judicial
    proceedings.” 
    Id. Appellants “bear[]
    the burden of proving
    each element under this standard.” 
    Id. Agent Bevington’s
    cooperating witness testimony
    constitutes plain error in light of this court’s holding in United
    States v. Moore, 
    651 F.3d 30
    , 59–61 (D.C. Cir. 2011), decided
    after appellants’ trial. 8 In Moore, an FBI agent similarly
    testified that cooperating witnesses had inside information the
    FBI would try to verify before striking a deal with 
    them. 651 F.3d at 59
    . This court found the “clear implication was that
    the government had selected only truthful co-conspirator
    witnesses for the pre-indictment investigation, from whom the
    jury would hear during the trial.” 
    Id. at 59–60.
    Such
    testimony infringes on the jury’s role as the sole judge of a
    witness’s credibility. 
    Id. at 59.
    Agent Bevington’s testimony
    was improper insofar as he vouched for the reliability of the
    investigation and the cooperating witnesses the government
    planned to have testify at trial. See 
    id. at 60.
    8
    The “plainness” of an error is evaluated as of the time of appellate
    review, not the time of the district court’s decision. Henderson v.
    United States, 
    133 S. Ct. 1121
    , 1127–29 (2013).
    19
    Nevertheless, we think any error introduced is harmless.
    Bevington’s testimony did not affect appellants’ substantial
    rights or affect the fairness, integrity, or public reputation of
    the proceedings. Prior to Agent Bevington’s testimony, the
    court instructed the jury it was “not bound by an expert’s
    opinion,” Oct. 4, 2006 AM Trial Tr. at 12, and the court in its
    preliminary and final instructions told the jury it was the sole
    judge of witness credibility, Oct. 3, 2006 AM Trial Tr. at 97–
    98; Nov. 7, 2006 AM Trial Tr. at 101. The court’s final jury
    instructions included a warning to the jury that “[a] witness
    who realizes that he may be able to obtain his or her own
    freedom or receive a lighter sentence by giving testimony
    may have a motive to lie. The testimony of a witness who has
    entered into a plea agreement should be received with caution
    and scrutinized with care.” Nov. 7, 2006 AM Trial Tr. at 106.
    The court’s instructions thus minimized any harm caused by
    Bevington’s vouching. See 
    Moore, 651 F.3d at 62
    (certain
    errors “had no prejudicial effect in view of limiting
    instructions”).
    Furthermore, the impact of Agent Bevington’s testimony
    was mitigated by other factors. Unlike in Moore—where this
    court also found the error harmless—Agent Bevington
    acknowledged he had no knowledge of the particular
    cooperating witnesses who would testify in appellants’ trial.
    On cross-examination, Eiland’s attorney got Bevington to
    agree that sometimes cooperating witnesses lie and that
    ultimately law enforcement officers have to make a
    “subjective” judgment as to whether the witness is credible.
    Oct. 4, 2006 AM Trial Tr. at 52–53. Here, even without the
    cooperating witnesses, there was significant evidence of
    appellants’ guilt, including corroborating wiretaps. See
    
    Brown, 508 F.3d at 1074
    (prosecutor’s error in vouching for a
    government witness did not require reversal because the other
    evidence weighed heavily against defendant and because the
    20
    judge had instructed the jury that it was the sole judge of
    witness credibility); see also United States v. Rawlings, 
    522 F.3d 403
    , 410–13 (D.C. Cir. 2008). Appellants have not met
    their burden of demonstrating that the error affected their
    substantial rights. 9
    IV. Lay Opinion Testimony Interpreting Wiretap Evidence
    We have held that a lay witness may not give opinion
    testimony interpreting cryptic evidence when the testimony
    violates Federal Rule of Evidence 701. See United States v.
    Hampton, 
    718 F.3d 978
    , 981–83 (D.C. Cir. 2013); see 
    id. at 985–86
    (Brown, J., concurring). Appellants contend the
    district court violated this rule in allowing FBI Agent Hall, a
    government witness, to give lay opinion testimony
    interpreting the calls intercepted by the government’s
    wiretaps. Agent Hall, who participated in the investigation of
    appellants’ drug operation, testified numerous times
    throughout the trial. At times, Agent Hall’s testimony was
    intended to put in context the recorded calls played at trial.
    However, even if Agent Hall’s testimony constituted plain
    9
    To the extent appellants object to Agent Bevington’s testimony
    regarding the mechanics of a plea deal, there was no plain error.
    Agent Bevington merely stated that after a cooperating witness’s
    compliance is complete, the government files a motion giving the
    court discretion to depart from a mandatory minimum in sentencing
    the witness. Oct. 4, 2006 AM Trial Tr. at 39. “This court has held
    that plea agreements can be introduced by the prosecution and
    referred to in their entirety, because so doing does not improperly
    bolster the witness who signed the plea agreement.” 
    Brown, 508 F.3d at 1074
    . The court has only suggested that “use of the
    ‘truthfulness’ portions of plea agreements becomes impermissible
    vouching when the prosecutors explicitly or implicitly indicate that
    they can monitor and accurately verify the truthfulness of the
    witness’ testimony.” 
    Id. Moreover, any
    error would not be
    reversible for the reasons discussed above.
    21
    error under Hampton, appellants have not demonstrated error
    warranting reversal. Appellants’ briefs fail to specifically
    describe the allegedly erroneous testimony or how it may
    have affected the convictions. Appellants have failed to
    demonstrate any error was substantially prejudicial.
    V. Replacement of Miller’s Appointed Counsel Prior to the
    Second Trial
    Miller argues he was denied his Sixth Amendment right
    to counsel when the district court, over his objection, replaced
    his appointed counsel from the first trial with new counsel
    prior to the second trial. 10 Miller says the Sixth Amendment
    10
    In addition, Miller claims he was denied his constitutional right
    to be present at all stages of his trial because the district court
    decided to replace Miller’s counsel outside Miller’s presence. We
    need not decide now whether a defendant has a right to be present
    at a hearing on replacing counsel. See Kentucky v. Stincer, 
    482 U.S. 730
    , 745 (1987) (“[The] privilege of presence is not
    guaranteed when presence would be useless, or the benefit but a
    shadow, [but] due process clearly requires that a defendant be
    allowed to be present to the extent that a fair and just hearing would
    be thwarted by his absence.”). Miller was present at the June 26,
    2006 hearing at which the court heard the government’s motion to
    join Miller to the trial of the second group of conspirators. Hr’g Tr.
    at 3, June 26, 2006. At that hearing the court also considered
    Miller’s opposition to that motion and Miller’s request for a
    severance or postponement. 
    Id. at 4–5.
    Miller had an opportunity
    to tell the court, through counsel, he wished to have McDaniel
    continue to represent him. 
    Id. Although Miller
    filed a written
    motion for severance later, on July 2, the court heard and
    considered argument at the June 26 hearing. Miller did not attend
    the brief status conference on July 18 at which the court ordered
    Miller joined to the second trial and appointed Saunders to
    represent him. But the court did not hear argument on July 18.
    Thus, Miller was present at the only hearing where his presence
    22
    compels a different rule: once an indigent defendant and his
    appointed counsel develop an attorney–client relationship, the
    defendant has a constitutional right to continued
    representation by that attorney.
    Even assuming arguendo Miller had a Sixth Amendment
    right to continued representation, such a right is not absolute
    where a continuance is sought to retain or replace counsel of
    choice. United States v. Burton, 
    584 F.2d 485
    , 489 (D.C. Cir.
    1978). Rather, the defendant’s right “must be carefully
    balanced against the public’s interest in the orderly
    administration of justice.” 
    Id. The district
    court considers
    such a motion for a continuance in its sound discretion and “is
    not subject to review absent a clear abuse.” 
    Id. at 489–90.
    “Trial judges necessarily require a great deal of latitude in
    scheduling trials. Not the least of their problems is that of
    assembling the witnesses, lawyers, and jurors at the same
    place at the same time, and this burden counsels against
    continuances except for compelling reasons.” Morris v.
    Slappy, 
    461 U.S. 1
    , 11 (1983). Among the factors to be
    weighed by the trial judge in considering a motion for a
    continuance are
    the length of the requested delay; whether other
    continuances have been requested and granted; the
    balanced convenience or inconvenience to the litigants,
    witnesses, counsel, and the court; whether the requested
    delay is for legitimate reasons, or whether it is dilatory,
    purposeful, or contrived; whether the defendant
    contributed to the circumstance which gives rise to the
    request for a continuance; whether the defendant has
    might have been useful—the June 26 hearing. Miller fails to offer
    any reason to suggest his attendance at the July 18 conference
    would have served any purpose, particularly as he had previously
    fully conveyed his views to the district court.
    23
    other competent counsel prepared to try the case,
    including the consideration of whether the other counsel
    was retained as lead or associate counsel; whether
    denying the continuance will result in identifiable
    prejudice to defendant’s case, and if so, whether this
    prejudice is of a material or substantial nature; [and] the
    complexity of the case.
    
    Burton, 584 F.2d at 490
    –91. “In weighing these factors, we
    presume that the trial judge’s decision was reasonable, and
    find a violation of the right to the effective assistance of
    counsel only if the denial of a continuance was unreasoning
    and arbitrary.” United States v. Poston, 
    902 F.2d 90
    , 97 (D.C.
    Cir. 1990).
    Applying the relevant Burton factors to this case, we
    conclude that, even if Miller had a Sixth Amendment right to
    continued representation by his appointed counsel, the district
    court did not abuse its discretion in denying Miller’s motion
    for a continuance and replacing Miller’s counsel. Because of
    McDaniel’s busy trial calendar, Miller was requesting a
    seven-month continuance. The district court reasonably
    concluded this was too long for Miller’s co-defendants, who
    were being held without bail, to wait for their joint trial. See
    Hr’g Tr. at 12, June 26, 2006. On the other hand, severing
    Miller’s trial would have imposed an enormous
    inconvenience on the government, witnesses, and the court,
    which would have had to repeat a three-month trial for the
    third time. 11 Thomas Saunders had a clear calendar to
    11
    Miller moved for a continuance for the second trial group or, in
    the alternative, a severance so Miller could be tried separately at a
    later time when McDaniel was available to continue his
    representation. Miller’s motion for a severance here is nothing
    more than a motion for an individual continuance. Thus, we review
    24
    prepare for Miller’s trial with the second group of defendants
    in October 2006, see Hr’g Tr. at 2, July 18, 2006, and the
    judge required McDaniel to continue his representation
    through the beginning of voir dire to help Saunders prepare
    for trial. See 
    id. at 2–3;
    Order, July 18, 2006, D.D.C. 04-379,
    ECF No. 701. The judge offered to assist Saunders by
    holding prompt status conferences any time that would aid
    Saunders’s preparation. Hr’g Tr. at 3, July 18, 2006. In these
    circumstances, it was reasonable for the trial court to conclude
    that two months would provide Saunders with enough time to
    prepare for trial, particularly because he had the advantage of
    being able to review the proceedings of the first trial in which
    Miller was tried on the same charges.
    Miller also has not shown any harm from the district
    court’s decision. “In order to obtain reversal, an appellant
    must show that actual prejudice resulted from denial of the
    continuance.” United States v. Celis, 
    608 F.3d 818
    , 839 (D.C.
    Cir. 2010). There is no indication Saunders was not fully
    prepared by the time trial started. To the contrary, when just
    prior to trial the government moved for a continuance to
    accommodate an ill witness, Saunders opposed that motion.
    Resp. to Gov’t Mot. to Continue, September 5, 2006, D.D.C.
    No. 04-379, ECF No. 766. Miller is unable to point to any
    way in which he was denied effective assistance of counsel. 12
    The district court did not err in deciding to retry Miller
    with the second group of defendants, to hold the second trial
    the district court’s denial of the alternate motions under the same
    standard.
    12
    At oral argument Miller’s counsel stated that the short time
    Saunders had to prepare created an “appearance of unfairness.” But
    without actual prejudice, a district court’s denial of a continuance is
    not reversible error. See 
    Celis, 608 F.3d at 839
    .
    25
    as originally scheduled in October 2006, and to replace
    Miller’s appointed counsel to adhere to that trial date.
    VI. Sufficiency of the Evidence Against Miller
    Miller contends there was insufficient evidence presented
    at trial to sustain three of his convictions. The court reviews
    challenges to the sufficiency of the evidence “de novo,
    viewing the evidence in the light most favorable to the
    government, and affirming a guilty verdict where any rational
    trier of fact could have found the essential elements of the
    crime beyond a reasonable doubt.”             United States v.
    Littlejohn, 
    489 F.3d 1335
    , 1338 (D.C. Cir. 2007). The court
    “give[s] full play to the right of the jury to determine
    credibility, weigh the evidence and draw justifiable inferences
    of fact.” 
    Id. A. Continuing
    Criminal Enterprise
    Miller argues, through counsel, there was insufficient
    evidence for the jury to convict him of engaging in a
    continuing criminal enterprise in violation of 21 U.S.C. § 848.
    To convict a defendant of CCE, the government must prove
    the defendant committed: “1) a felony violation of the federal
    narcotics law; 2) as part of a continuing series of violations;
    3) in concert with five or more persons; 4) for whom the
    defendant is an organizer or supervisor; 5) from which he
    derives substantial income or resources.” 
    Moore, 651 F.3d at 80
    . Miller contends the government failed to prove he
    “occupie[d] a position of organizer, a supervisory position, or
    any other position of management” with regard to five or
    more people. 21 U.S.C. § 848(c)(2)(A). To satisfy this
    element, the government must show the defendant “specifie[d
    the supervisees’] activities in adequate detail.” United States
    v. Williams-Davis, 
    90 F.3d 490
    , 508 (D.C. Cir. 1996). The
    defendant must have “exercise[d] some sort of managerial
    26
    responsibility.” 
    Id. “Delegation of
    management to an
    intermediate supervisor does not prevent lower-level
    subordinates from being counted in the continuing criminal
    enterprise statute.” United States v. Delgado, 
    4 F.3d 780
    , 785
    (9th Cir. 1993). The government identifies five individuals
    whom it claims were Miller’s supervisees: Timothy Thomas,
    Tyrone Thomas, Charles Brown, Darius Ames, and Jay
    Ingram.
    There was sufficient evidence for a jury rationally to find
    Miller exercised a supervisory role over Tyrone Thomas and
    Timothy Thomas. Miller exercised a supervisory role over
    both of these individuals in arranging for Tyrone to transport
    money to Arizona and to transport cocaine back to
    Washington, D.C.        “Drug runners can be considered
    managees for purposes of 21 U.S.C. § 848.” United States v.
    Wilson, 
    605 F.3d 985
    , 1030 (D.C. Cir. 2010). In March 2004,
    Miller called Tyrone and arranged for him to drive to
    Washington. Oct. 10, 2006 PM Trial Tr. at 71–73. Miller
    then told Tyrone that Timothy Thomas would introduce
    Tyrone to Eiland, with whom Tyrone would be exchanging
    the money for drugs in Arizona. 
    Id. at 73–74.
    As Tyrone was
    transporting the cocaine back to Washington, Miller kept in
    contact with Timothy Thomas, who was checking on
    Tyrone’s progress. Oct. 12, 2006 AM Trial Tr. at 82–83;
    Calls 5589, 5659, Gov’t Supplemental App’x 51–53. When
    Tyrone told Timothy Thomas the cocaine had been lost,
    Miller organized the response, at one point instructing
    Timothy to get the baggage claim number for Tyrone’s bag.
    Oct. 11, 2006 AM Trial Tr. at 24–26; Call 6154, Gov’t
    Supplemental App’x 55–56. This evidence establishes Miller
    exercised the requisite supervisory control over both Tyrone
    Thomas and Timothy Thomas, organizing the transportation
    of money and drugs.
    27
    The government also presented sufficient evidence to
    establish Miller was a manager of Charles Brown. When
    Tyrone claimed that the cocaine he shipped by bus was lost,
    Miller recruited Brown to help find the cocaine. Oct. 12,
    2006 PM Trial Tr. at 13–14; Call 6133, Gov’t Supplemental
    App’x 54. At another time Miller arranged for Brown to
    accept a package of heroin for Miller. Oct. 18, 2006 AM
    Trial Tr. at 31–32.
    The government’s evidence with regard to Darius Ames
    is weaker but still sufficient to support the jury’s conclusion
    that Ames was a supervisee of Miller. Darius Ames bagged
    heroin for Eiland. Oct. 4, 2006 PM Trial Tr. at 26–27. On a
    few occasions Miller came into the stash apartment where
    Ames was bagging and took heroin. 
    Id. at 43–44;
    Oct. 5,
    2006 AM Trial Tr. at 8–14. Miller would measure out 25
    grams of heroin, stretch it to 50 grams, bag it, and leave
    $1,000 with Ames, directing him to give the money to Eiland.
    Oct. 5, 2006 AM Trial Tr. at 8–14. In another instance,
    Eiland, who was out of town at the time, directed Ames to
    pick up a shoe box from Miller. 
    Id. at 15–16.
    Miller was to
    call Ames when Miller was ready for Ames to pick it up. 
    Id. When Miller
    called Ames, Ames drove to meet Miller and,
    following Miller’s instruction, went through the alleyway to
    the back door and into the basement of Miller’s aunt’s house.
    
    Id. at 16;
    Oct. 4, 2006 PM Trial Tr. at 57. Miller proceeded to
    give Ames a shoebox of money that Ames took and stored for
    Eiland. Oct. 4, 2006 PM Trial Tr. at 57–58. Together, this
    evidence, although not strong, supports the inference that
    Ames was Miller’s subordinate. Both Miller and Eiland
    viewed Ames as a lower-level conspirator—a gofer whom
    they were free to direct. Under the deferential standard we
    apply on reviewing a sufficiency challenge, we conclude a
    jury rationally could have found Ames to be a supervisee of
    Miller.
    28
    Nevertheless, the government failed to produce sufficient
    evidence to demonstrate that Jay Ingram was supervised by
    Miller. FBI Agent Hall testified that Ingram was a lieutenant
    in the organization and was Miller’s cousin. Oct. 17, 2006
    AM Trial Tr. at 56. But Ingram’s familial relation to Miller is
    irrelevant, and Agent Hall’s description of Ingram as a
    lieutenant is conclusory. The agent’s opinion regarding
    Miller’s role has no more weight than the facts upon which it
    is based, and those were insufficient. There was evidence that
    Ingram obtained PCP from Miller. Oct. 19, 2006 PM Trial
    Tr. at 52–53. But a buyer–seller relationship, without more,
    does not suggest a managerial relationship. See United States
    v. Mitchell, 
    49 F.3d 769
    , 772 (D.C. Cir. 1995); see also
    United States v. Witek, 
    61 F.3d 819
    , 822–23 (11th Cir. 1995)
    (“Buyers and sellers often need to accommodate one another
    when meeting and arranging for delivery. Such conduct is
    simply incidental to the buyer-seller relationship.”). A dealer
    who simply sells drugs to other dealers and is paid from the
    proceeds of their sales, but who has no other involvement in
    their sales, does not exercise the managerial control required
    for a CCE conviction. 
    Id. There was
    no evidence presented
    at trial that Miller played any ongoing role in Ingram’s sales
    after supplying Ingram with PCP. Furthermore, the jury’s
    verdict demonstrates that it did not deem the PCP evidence
    credible. The jury found Miller not guilty of all PCP-related
    charges.
    The government points to an intercepted phone call in
    which Eiland, who was looking for drugs, called Miller and
    asked where Ingram was. Oct. 17, 2006 AM Trial Tr. at 56–
    57, 65; Call 1172, Gov’t Supplemental App’x at 37. Miller
    responded that Ingram was with him. 
    Id. Rashawn Briggs,
    a
    cooperating witness, also testified he once saw Eiland, Miller,
    and Ingram meeting outside a carry-out restaurant. Oct. 19,
    2006 AM Trial Tr. at 34–36. None of this evidence suggests
    29
    Miller acted in a supervisory capacity with regard to
    Ingram. 13 This evidence of association is not enough to prove
    that Miller managed Ingram.
    The government’s evidence at trial was insufficient to
    convince a rational jury beyond a reasonable doubt that Miller
    acted as an organizer, supervisor, or manager for five or more
    individuals. Because the government failed to establish one
    of the elements of CCE, we vacate Miller’s conviction on this
    count.
    B. Narcotics Conspiracy
    In a supplemental pro se brief, Miller challenges the
    sufficiency of the evidence for his conviction of narcotics
    conspiracy.     In particular, Miller argues the evidence
    introduced at trial varied from the indictment because it
    established multiple conspiracies rather than the single
    overarching drug conspiracy charged and that he was
    prejudiced by this variance. Even though the narcotics
    conspiracy conviction was vacated by the district court as a
    lesser included offense of CCE, we address Miller’s argument
    because the CCE conviction must be vacated and the
    narcotics conspiracy conviction can now be reinstated.
    To establish the existence of a narcotics conspiracy in
    violation of 21 U.S.C. § 846, the government must show an
    agreement between at least two people to violate narcotics
    13
    There was substantial evidence presented at trial showing that
    Ingram was a supervisee of Eiland. See Oct. 4, 2006 PM Trial Tr.
    at 58–71 (Ames testifying that Eiland twice took Ames and Ingram
    to Phoenix to purchase heroin); Oct. 19, 2006 AM Trial Tr. at 15
    (Briggs testifying that Ingram distributed cocaine base and heroin
    for Eiland). There was not the same evidence with regard to
    Miller’s relationship with Ingram.
    30
    law. United States v. Baugham, 
    449 F.3d 167
    , 171 (D.C. Cir.
    2006). “In determining whether the evidence supports a
    finding of a single conspiracy or instead only demonstrates
    multiple conspiracies, we look at whether the defendants
    shared a common goal, any interdependence between the
    alleged participants, and any overlap among alleged
    participants, such as the presence of core participants linked
    to all the defendants.” United States v. Gatling, 
    96 F.3d 1511
    ,
    1520 (D.C. Cir. 1996). To warrant reversal, the defendant
    bears the burden of showing “(1) that the evidence established
    the existence of multiple conspiracies, rather than the one
    conspiracy alleged in the indictment, and (2) that because of
    the multiplicity of defendants and conspiracies, the jury was
    substantially likely to transfer evidence from one conspiracy
    to a defendant involved in another.” United States v.
    Tarantino, 
    846 F.2d 1384
    , 1391 (D.C. Cir. 1988). The court
    will uphold the verdict if the evidence adequately supports the
    jury’s finding that a single conspiracy existed. 
    Id. Miller demonstrates
    neither variance nor prejudice. The
    goal of the conspiracy, as demonstrated at trial, was to
    distribute mass quantities of drugs for profit. The evidence
    demonstrated the substantial profit the defendants reaped
    from their participation in the conspiracy. Additionally, there
    was substantial interdependence among the defendants. The
    evidence at trial exposed a large section of the conspiracy’s
    procurement and distribution chain. For instance, Miller and
    Eiland arranged for Tyrone Thomas to travel to Arizona to
    purchase wholesale amounts of cocaine. At one time Miller
    also arranged for Brown to accept a package of heroin on his
    behalf. Oct. 18, 2006 AM Trial Tr. at 31–32. The conspiracy
    employed Darius Ames and Eric Butcher to process and bag
    heroin for street-level distribution. Oct. 4, 2006 PM Trial Tr.
    at 29–31; Oct. 19, 2006 PM Trial Tr. at 48–50. Eiland and
    Miller also occasionally stretched heroin at the stash house.
    31
    Oct. 4, 2006 PM Trial Tr. at 43. Ricky Gore and Chester
    Craig Simon would then obtain the heroin from Ames or
    Eiland and distribute it to street-level sellers. 
    Id. at 52–57;
    Oct. 19, 2006 PM Trial Tr. at 30–35. Gore also obtained
    crack from Eiland. Oct. 19, 2006 PM Trial Tr. at 44–46. The
    government’s evidence clearly demonstrates the conspirators’
    interdependence in obtaining, processing, and distributing the
    narcotics. Each conspirator depended on the others to play
    their roles in the scheme. Finally, this evidence also
    establishes the overlap element—Miller and Eiland were key
    participants in all of the acts, arranging for the purchase and
    distribution of cocaine, heroin, and crack.
    Even assuming there was a variance, Miller failed to
    show he was substantially prejudiced by it. “The risk of
    ‘spillover prejudice,’ which may occur when a jury imputes
    evidence from one conspiracy to a defendant involved in
    another conspiracy, is less likely the fewer the defendants.”
    United States v. Gaviria, 
    116 F.3d 1498
    , 1533 (D.C. Cir.
    1997). Only four defendants were tried together in Miller’s
    second trial. See 
    id. (little risk
    of spillover prejudice where
    only four defendants were tried). There is also less risk of
    spillover prejudice where, as here, the government presents
    wiretap evidence so that the jury can examine each individual
    defendant’s words separately in order to convict. See 
    id. The jury’s
    not-guilty verdicts for Bryant on all charges and the
    remaining defendants on the PCP-related charges suggest the
    jury was able to consider the evidence against each defendant
    and for each charge individually. See United States v.
    Phillips, 
    664 F.2d 971
    , 1017 (5th Cir. Unit B 1981) (where
    defendants were convicted on some counts and acquitted on
    others, “the jury's verdict reflects that it carefully considered
    the evidence supporting each charge against each defendant”).
    32
    The government presented sufficient evidence to sustain
    Miller’s narcotics conspiracy conviction. The district court
    vacated the conviction on this count as a lesser-included
    offense of the continuing criminal enterprise conviction.
    Because we vacate the CCE conviction, we will reinstate the
    narcotics conspiracy count. See Rutledge v. United States,
    
    517 U.S. 292
    , 306 (1996) (courts of appeal “may direct the
    entry of judgment for a lesser included offense when a
    conviction for a greater offense is reversed on grounds that
    affect only the greater offense”); United States v. Baylor, 
    97 F.3d 542
    , 548 (D.C. Cir. 1996).
    C. RICO Conspiracy
    In his pro se brief, Miller also challenges the sufficiency
    of the evidence supporting his RICO conspiracy conviction.
    The RICO statute, 18 U.S.C. § 1962(d), makes it unlawful to
    conspire to violate § 1962(c), which, in turn, provides that it is
    unlawful for anyone “employed by or associated with any
    enterprise engaged in, or the activities of which affect,
    interstate or foreign commerce, to conduct or participate,
    directly or indirectly, in the conduct of such enterprise’s
    affairs through a pattern of racketeering activity or collection
    of unlawful debt.” 18 U.S.C. § 1962(c). Miller contends the
    government failed to prove at trial the existence of either an
    “enterprise” or “a pattern of racketeering activity.”
    The RICO statute defines “enterprise” to include “any
    union or group of individuals associated in fact although not a
    legal entity.” 18 U.S.C. § 1961(4). An association-in-fact
    enterprise must have three structural features: “a purpose,
    relationships among those associated with the enterprise, and
    longevity sufficient to permit these associates to pursue the
    enterprise’s purpose.” Boyle v. United States, 
    556 U.S. 938
    ,
    946 (2009). An association-in-fact enterprise “need not have
    33
    a hierarchical structure or a ‘chain of command’; decisions
    may be made on an ad hoc basis and by any number of
    methods—by majority vote, consensus, a show of strength,
    etc. Members of the group need not have fixed roles;
    different members may perform different roles at different
    times.” 
    Id. at 948.
    “[P]roof of a pattern of racketeering
    activity may be sufficient in a particular case to permit a jury
    to infer the existence of an association-in-fact enterprise.” 
    Id. at 951.
    A pattern of racketeering activity requires “two or more
    related predicate acts of racketeering within a 10–year
    period.” United States v. Crosby, 
    20 F.3d 480
    , 481 (D.C. Cir.
    1994). The government must show that “the racketeering
    predicates are related, and that they amount to or pose a threat
    of continued criminal activity.” H.J. Inc. v. Nw. Bell Tel. Co.,
    
    492 U.S. 229
    , 239 (1989).
    The same evidence that supports the narcotics conspiracy
    conviction supports the jury’s finding of an enterprise. The
    enterprise’s purpose was to distribute drugs for profit. The
    defendants organized themselves so each would carry out a
    separate role in the distribution chain, with Eiland and Miller
    overseeing the operation. Rashawn Briggs testified he was
    dealing drugs with Eiland and Miller between 2000 and 2002.
    Oct. 19, 2006 AM Trial Tr. at 56. Thus, the enterprise
    continued for a period “sufficient to permit the[] associates to
    pursue the enterprise’s purpose.” 
    Boyle, 556 U.S. at 946
    .
    The government also presented evidence establishing the
    existence of an agreement to engage in a pattern of
    racketeering activity. See Salinas v. United States, 
    522 U.S. 52
    , 65 (1997) (“A conspirator must intend to further an
    endeavor which, if completed, would satisfy all of the
    elements of a substantive criminal offense . . . .”). The jury
    34
    found the government proved agreement to commit three
    racketeering acts—Act 1 (conspiracy to distribute heroin,
    cocaine, and cocaine base), Act 4 (attempt to possess with
    intent to distribute cocaine and unlawful use of a
    communication facility), and Act 6 (attempt to possess with
    intent to distribute heroin). Miller argues the proven acts
    were not related. In fact, the predicate acts were related by
    the nature of the acts (all narcotics offenses), temporal
    proximity (the acts all occurred between 1999 and 2004),
    purpose (to distribute drugs for profit), and participants. The
    government established the existence of both an enterprise
    and an agreement to engage in a pattern of racketeering
    activity.   Miller’s challenge to the RICO conspiracy
    conviction will be denied.
    VII. Fine Imposed on Eiland
    Before sentencing Eiland, the district court vacated
    Count 1, the narcotics conspiracy conviction, as a lesser
    included offense of Count 3, the continuing criminal
    enterprise conviction. Sentencing (Eiland) Tr. at 4, Nov. 28,
    2007; Judgment as to Eiland 1, Feb. 7, 2008, D.D.C. 04-379,
    ECF No. 1029. Nevertheless, the court ordered Eiland to pay
    a fine of $7,000 on Count 1. Sentencing (Eiland) Tr. at 11,
    Nov. 28, 2007; Judgment as to Eiland 7, Feb. 7, 2008, D.D.C.
    04-379, ECF No. 1029. The government concedes it was
    error for the court to impose that fine. We vacate the fine and
    remand to the district court to consider whether it intended to
    impose the fine on one of the remaining counts of conviction.
    *****
    We affirm Gerald Eiland’s convictions but vacate his fine
    on Count 1. We remand for consideration of whether a fine
    should be imposed on one of the remaining counts of
    conviction. We vacate Frederick Miller’s conviction on
    35
    Count 3, continuing criminal enterprise, but affirm and
    reinstate his conviction on Count 1, narcotics conspiracy.
    Accordingly, we vacate Miller’s sentence and remand for
    resentencing.
    So ordered.