United States v. Paz-Alvarez ( 2015 )


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  •           United States Court of Appeals
    For the First Circuit
    Nos. 13-2098, 13-2101
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    ANGEL PAZ-ALVAREZ and LUIS MARRERO-MARRERO,
    Defendants, Appellants.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. José Antonio Fusté, U.S. District Judge]
    Before
    Selya, Circuit Judge,
    Souter,* Associate Justice, and
    Lipez, Circuit Judge.
    Raymond Rivera Esteves for appellant Paz-Alvarez.
    Javier A. Morales-Ramos for appellant Marrero-Marrero.
    Juan Carlos Reyes-Ramos, Assistant United States Attorney,
    with whom Rosa Emilia Rodríguez-Vélez, United States Attorney, and
    Nelson Pérez-Sosa, Assistant United States Attorney, Chief,
    Appellate Division, were on brief, for appellee.
    August 21, 2015
    * Hon. David H. Souter, Associate Justice (Ret.) of the
    Supreme Court of the United States, sitting by designation.
    LIPEZ,   Circuit Judge.      Appellants Angel Paz-Alvarez
    ("Paz") and Luis Marrero-Marrero ("Marrero") were convicted for
    their roles in a drug trafficking conspiracy. Together, they built
    sophisticated secret compartments ("clavos") in boats designed to
    smuggle hundreds of kilograms of cocaine into the United States.
    They argue that their convictions should be vacated because of
    errors in the jury instructions.        In addition, Paz challenges the
    sufficiency of the evidence and the two-level sentence enhancement
    he received for using a "special skill," while Marrero argues that
    the conspiracy statutes are unconstitutional as applied to him,
    that the admission of hearsay evidence gave rise to a prejudicial
    variance, and that there was cumulative error.       Finding no errors
    and the evidence sufficient, we affirm.
    I. Background
    A.   Facts
    Since one of the claims addressed in this opinion is a
    challenge to the sufficiency of the evidence, we recount the facts
    in the light most favorable to the verdict.       See United States v.
    Rodríguez-Soler, 
    773 F.3d 289
    , 290 (1st Cir. 2014).1      In 2009, Nick
    Irizarry-Rosado ("Irizarry") and Edwin Retamar-Oriol ("Retamar")
    went into business together smuggling cocaine into Puerto Rico.
    1Paz challenges the sufficiency of the evidence. We do not
    think that Marrero is prejudiced by the application of this
    standard because the substantive argument for one of his claims
    is, in essence, a sufficiency challenge. See footnote 16, infra.
    - 2 -
    They had met while in the mutual employ of a Puerto Rico drug
    trafficker, but Irizarry and Retamar had grown dissatisfied with
    their employer's way of doing business.        Using one of their former
    employer's     boats   and   Irizarry's   contacts        in   the   Dominican
    Republic, they embarked on an independent venture and successfully
    smuggled twenty kilograms of cocaine into Puerto Rico.
    With the profits from their first solo smuggling job,
    they purchased a vessel of their own, the Sheymarie.             They quickly
    put the Sheymarie to use, successfully smuggling another 100
    kilograms of cocaine into Puerto Rico.         Encouraged by the success
    of that undertaking, their contacts in the Dominican Republic then
    proposed smuggling a larger quantity of cocaine, specifically, 500
    kilograms.     Irizarry and Retamar agreed that they would take on
    the larger load and, to accomplish the task, purchased a second
    vessel, the Such Is Life.
    Problematically,   the   Such    Is   Life    was   not    already
    outfitted with a clavo large enough to smuggle 500 kilograms of
    cocaine.     Consequently, Irizarry and Retamar asked drug dealers
    with whom they were in contact to recommend individuals with the
    skills necessary to build hidden compartments in their boat.                Paz
    and his assistant, Marrero, came highly recommended.                   They had
    built "several" clavos in the past for the drug dealers Irizarry
    and Retamar consulted and had reportedly done "a good job."
    - 3 -
    After Paz and Marrero were assured that Irizarry and
    Retamar could be trusted, Paz, Marrero, and a third clavo builder,
    Jonathan Delgado-Flores ("Delgado"), met with Irizarry and Retamar
    in Puerto Rico.    At the meeting, Irizarry and Retamar told the
    clavo builders that they needed a secret compartment built in the
    Such Is Life large enough to hold 500 kilograms of cocaine.    Paz
    promised that "it would be done."     Paz, Marrero, Irizarry, and
    Retamar then met several more times to plan the clavo.
    In September 2009, Irizarry, Retamar, Paz, Marrero, and
    Delgado met inside the Such Is Life to discuss the completed
    clavo's operation.   A sixth individual was also present at that
    meeting: Ramon Alvarado-Ignacio, who went by the moniker "Moncho"
    and administered the marina where the Such Is Life was harbored.
    Moncho was secretly a government informant, wired to record the
    meeting.   Paz, however, was suspicious of Moncho and refused to
    discuss the clavo's operation in front of him.     Moncho left the
    room, leaving the door open, and Paz instructed another person in
    the room to close the door so Moncho could not hear how to operate
    the secret compartment.   Several minutes later, when that portion
    of the conversation was concluded, Moncho was permitted to reenter.
    At the close of the meeting, Retamar told Paz that they
    needed a clavo built in their other boat, the Sheymarie.      Soon,
    Paz and Marrero were at work on two secret compartments in that
    vessel: they enlarged an existing clavo and built a second one.
    - 4 -
    Within   a   month,   however,     law   enforcement    officials   detected
    controlled substances onboard the Sheymarie and seized her.
    On   November   10,   2009,   Irizarry,    Retamar,    Paz,   and
    Marrero again met in Puerto Rico, this time to discuss building an
    additional compartment in the Such Is Life.            A second compartment
    was needed because 500 kilograms of cocaine would not comfortably
    fit in the first clavo.2
    Two days later, Retamar, Paz, Marrero, and others met in
    Puerto Rico to discuss the new clavo.            They also discussed the
    upcoming trip, which was being coordinated with the Dominican
    contacts, to smuggle 500 kilograms of cocaine from Venezuela into
    Puerto Rico by way of a rendezvous point on the open sea near St.
    Croix.   Retamar invited Paz, Marrero, and Delgado to join him on
    the voyage, and Marrero and Delgado agreed to go.           Later, however,
    Marrero changed his mind; hence, neither he nor Paz accompanied
    Retamar on the drug-smuggling excursion.          In December 2009, with
    the new clavo completed, Delgado and Retamar took the Such Is Life
    2 The first clavo had been built in a space that had a small
    motor   and  two   rods   that   held  the   propellers.      After
    "reinvestigat[ing]" that site, Retamar and his cohorts "found out
    it was too uncomfortable to do it [i.e, to store the cocaine]
    there. And we changed it." In other words, since putting the
    cocaine in the first clavo was "too difficult," the first clavo
    was "cancelled" (Paz contends this means "dismantled") and a second
    clavo was constructed elsewhere on the boat. Trial Tr. Day 2 at
    95-99, May 9, 2013.
    - 5 -
    to the rendezvous point.3          The mission was unsuccessful, though,
    because the supplier never arrived.
    At some point after that, Irizarry and Retamar parted
    ways.       Retamar launched an independent operation using a new
    vessel.       However,   federal       authorities      soon    arrested       Retamar,
    seizing his new boat and the drugs onboard.                    Retamar then began
    cooperating with the authorities.
    Under the direction of federal agents, Retamar reached
    out to Irizarry, ostensibly to resume business together.                        Retamar
    was actually helping to set up a sting operation: a voyage on which
    Irizarry and other conspirators would be caught smuggling drugs.
    As planned, Irizarry took the Such Is Life on a drug-smuggling
    mission and loaded it with cocaine.                On its way back to Puerto
    Rico, however, the Such Is Life encountered mechanical trouble and
    stalled in the water.         Federal agents rushed in, seizing the boat.
    Agents    from     U.S.     Customs     and       Border        Protection,
    including Agent Rafael Reyes ("Reyes"), searched the Such Is Life
    for contraband.       Reyes had ten years of experience on the anti-
    smuggling     team,   but     he   nevertheless         struggled       to    find    the
    sophisticated clavos that Paz and Marrero had constructed.                        Reyes
    and   his    team   ultimately     uncovered      the    clavos     and       found   150
    kilograms of cocaine within.
    3
    Delgado's job was to operate the complicated mechanism for
    opening and closing the clavo.
    - 6 -
    B.   Procedure
    In September 2012, a grand jury returned an indictment
    charging      the    appellants      and   nine   others     with:    one    count    of
    conspiring      to    possess     with     intent      to   distribute      controlled
    substances, in violation of 21 U.S.C. §§ 846, 841(a)(1), and
    841(b)(1)(A)(ii);        and    one    count      of   conspiring      to   import    a
    controlled substance, in violation of 21 U.S.C. §§ 963, 952,
    960(a)(1), and 960(b)(1)(B).4
    Paz and Marrero were tried together.5               The government's
    case       relied    heavily    on    cooperating       witness      Retamar,   whose
    testimony comprised most of the first two days of the three-day
    trial.      The jury returned a verdict of guilty on both counts as to
    both Paz and Marrero.           On the same verdict sheet, the jury was
    asked whether "more than 5kg of cocaine" or "less than 5kg of
    cocaine" were involved in the conspiracy.                     The jury found that
    "more than 5kg of cocaine" were involved.
    At sentencing, the district court determined that Paz's
    base offense level ("BOL") under the Sentencing Guidelines was 38
    because, by a preponderance of the evidence, over 150 kilograms of
    4
    Despite the two counts, we will follow the parties' lead
    and refer to "the conspiracy," singular.
    5
    Delgado pleaded guilty to the importation count and, on                       the
    government's motion, the distribution count was dismissed.                           The
    district court sentenced Delgado to 135 months' imprisonment                         and
    we upheld the sentence. See United States v. Delgado-Flores,                         
    777 F.3d 529
    (1st Cir. 2015).
    - 7 -
    cocaine were involved in the conspiracy.        Two levels were added to
    the BOL because Paz used a special skill, resulting in a total
    offense level of 40, with a corresponding Guidelines range of 292
    to   365   months.     The   court   sentenced    Paz     to     292   months'
    imprisonment.
    The court also set Marrero's BOL at 38 based on its
    finding that the conspiracy involved more than 150 kilograms of
    cocaine.    The court then reduced his BOL to 28 for, among other
    factors, minimal participation, yielding a Guidelines range of 78
    to 97 months' imprisonment.      However, the jury's finding that more
    than five kilograms of cocaine were involved in the conspiracy
    triggered a 120-month statutory minimum sentence.              Hence, Marrero
    was sentenced to 120 months' imprisonment.
    Paz   and   Marrero   each   appeal    their        sentences   and
    convictions on multiple grounds, some overlapping.
    II. Joint Issues
    Appellants make two challenges to the jury instructions.
    First, they contend that the court did not properly charge the
    jury with the mens rea required for conspiracy. Second, they argue
    that the court did not properly instruct the jury to apply the
    reasonable doubt standard to its finding that more than five
    kilograms of cocaine were involved in the conspiracy.
    - 8 -
    A.   The Intent Instruction
    To support a conviction for conspiracy, the evidence
    must show (1) the existence of a conspiracy, (2) the defendant's
    knowledge of the conspiracy, and (3) the defendant's knowing and
    voluntary participation in the conspiracy.           United States v.
    Dellosantos, 
    649 F.3d 109
    , 116 (1st Cir. 2011).       "Under the third
    element, the evidence must establish that the defendant both
    intended to join the conspiracy and intended to effectuate the
    objects of the conspiracy."     
    Id. The court
    instructed the jury on the third element of
    conspiracy as follows: "Here the allegation is that Mr. Paz and
    Mr. Marrero joined the conspiracy knowingly and willfully . . . .
    Acting knowingly and willfully, I already told you, means to do
    something that the law forbids.        It means to act voluntarily and
    intelligently, and with a specific intent that the conspiracy be
    successful."6
    6   In full, the relevant instructions were:
    Here the allegation is that Mr. Paz and
    Mr. Marrero joined the conspiracy knowingly
    and willfully . . . . Acting knowingly and
    willfully, I already told you, means to do
    something that the law forbids. It means to
    act voluntarily and intelligently, and with a
    specific intent that the conspiracy be
    successful. That is to say, with a bad purpose
    to disobey or disregard the law, and not
    because of mistake, accident, or other
    innocent reason.
    - 9 -
    Paz and Marrero argue that the court did not adequately
    instruct the jury that the requisite intent for conspiracy is two-
    pronged, i.e., that a defendant must both intend to join the
    conspiracy and intend that the conspiracy achieve its aim.   United
    States v. Gonzalez, 
    570 F.3d 16
    , 24 (1st Cir. 2009). Consequently,
    they argue, the court's instructions allowed the jury to convict
    them merely because they knew about the conspiracy.7    They admit
    that they knew the conspiracy would use their clavos to smuggle
    drugs, but insist that they were indifferent to the conspiracy's
    success and, hence, did not join it.   See United States v. Burgos,
    Proof that a defendant willfully joined
    in the agreement must be based upon the
    evidence of his own words and/or actions. . . .
    Even if the defendant was not part of the
    agreement at the very start, the defendant can
    be found guilty of the conspiracy if the
    Government proves that the defendant willfully
    joined the agreement.
    On the other hand, a person who has no
    knowledge of a conspiracy, but simply happens
    to act in a way that furthers some object of
    the conspiracy, does not thereby become a
    conspirator.    The crime of conspiracy is
    complete upon the agreement to participate in
    such a way in which you take steps to make the
    criminal venture happen, succeed.
    7 Marrero suggests, though does not meaningfully argue, that
    the court's failure to properly charge the jury with the full
    intent requirement constituted structural error. However, "a jury
    instruction that omits an element of the offense" is not structural
    error. Neder v. United States, 
    527 U.S. 1
    , 8 (1999).
    - 10 -
    
    703 F.3d 1
    , 11 (1st Cir. 2012) ("[W]e have suggested that it is
    not reasonable to conclude that a defendant who is 'indifferent'
    to the conspiracy was a member of it.").                 Below, they sought to
    add language to the instructions that would have made the two-
    pronged nature of the requisite intent more explicit, but the
    district court declined to add the language they proposed.8
    Our review of a court's refusal to give a requested
    instruction is de novo.            United States v. Baird, 
    712 F.3d 623
    , 628
    (1st Cir. 2013).            When, as here, the evidence is sufficient to
    support a requested instruction, our review proceeds in three
    steps: "We will reverse a district court's decision . . . only if
    the [requested] instruction was (1) substantively correct as a
    matter of law, (2) not substantially covered by the charge as
    rendered, and (3) integral to an important point in the case so
    that       the   omission    of    the   instruction    seriously    impaired   the
    defendant's        ability    to    present   his    defense."      
    Id. Paz and
    Marrero's challenge turns on the second step, whether the requested
    8
    At trial, the defendants offered language from the Pattern
    Criminal Jury Instructions for the District Courts of the First
    Circuit § 4.18.371(1) (updated Apr. 21, 2015) and from 
    Burgos, 703 F.3d at 11
    . In addition, during an in-chambers conference, Paz
    sought a "negative Direct Sales instruction," which would have
    explained that a defendant's knowledge that his goods or services
    will be used for an illegal purpose is not enough to prove that he
    intended to join the conspiracy. See United States v. Brandon, 
    17 F.3d 409
    , 449 (1st Cir. 1994); Direct Sales Co. v. United States,
    
    319 U.S. 703
    , 712 (1943).
    - 11 -
    instruction was substantially covered.                 The district court has
    broad discretion to determine "the precise manner that it explains
    legal concepts to the jury."           United States v. McFarlane, 
    491 F.3d 53
    , 59 (1st Cir. 2007).           The court need not accept verbatim the
    parties' preferred language.           
    Id. Here, the
    instruction explicitly stated the requirement
    that the defendants join the venture "knowingly and willfully,"
    and that a finding of guilt depends on whether they acted "with a
    specific intent that the conspiracy be successful."                       The court
    further instructed, "Even if the defendant was not part of the
    agreement at the very start, the defendant can be found guilty of
    the    conspiracy   if     the    Government    proves       that   the   defendant
    willfully joined the agreement." The court's emphasis on willfully
    joining the conspiracy with the intent that it be successful was
    sufficient to convey the intent requirement to the jury.                        See
    
    Gonzales, 570 F.3d at 24
      (equating       the   two-pronged     intent
    requirement with an instruction that a defendant "willfully" join
    the conspiracy). Although the instructions might have been clearer
    if the court had adopted the language that the defendants proposed,
    we    conclude   that    the     instructions     as    rendered    substantially
    covered the dual intents required for a conspiracy conviction and
    did not allow the jury to convict the defendants based solely on
    their knowledge that the secret compartments they built would be
    used for illegal purposes.
    - 12 -
    B.   The Drug Quantity Instruction
    The district court based its sentences on the jury's
    finding that more than five kilograms of cocaine were involved in
    the conspiracy.   Consequently, the court sentenced Paz and Marrero
    under 21 U.S.C. § 841(b)(1)(A), which mandates a sentence of ten
    years to life when five kilograms or more of cocaine are involved
    in the conspiracy.   Other than the fact of a prior conviction, any
    fact that increases the mandatory minimum or maximum sentence must
    be submitted to a jury and proved beyond a reasonable doubt.
    Alleyne v. United States, 133. S. Ct. 2151, 2155 (2013) (minimum);
    Apprendi v. New Jersey, 
    530 U.S. 466
    , 490 (2000) (maximum).    Paz
    and Marrero argue that the district court failed to instruct the
    jury that the drug amount had to be found "beyond a reasonable
    doubt."   Therefore, they assert, there was no proper finding on
    drug quantity, and they should have been sentenced under 21 U.S.C.
    § 841(b)(1)(C), which provides a sentencing range of zero to twenty
    years when drug quantity is not determined.   We conclude there was
    no error in the court's instructions as rendered.9
    Here, the court began its instructions with a full
    explanation of the reasonable doubt standard, the government's
    9Although Marrero concedes our review of this issue is for
    plain error, Paz contends the issue was preserved below because a
    relevant requested jury instruction was discussed and rejected in
    the trial judge's chambers. The defendants' claim fails under any
    standard of review.
    - 13 -
    burden to prove guilt beyond a reasonable doubt, and a defendant's
    right to rely on the government's failure "to establish beyond a
    reasonable doubt any element of a crime charged against him."
    Later in its instructions, the court discussed the indictment,
    which charged the defendants with participating in a conspiracy
    involving more than five kilograms of cocaine.              The court did not
    specifically refer to drug quantity at that point, but explained
    that the indictment "is simply an accusation" and that "the
    [g]overnment has to prove the defendants' guilt beyond a reasonable
    doubt."     Then, explaining the elements of conspiracy, the court
    reiterated, "the [g]overnment must prove beyond a reasonable doubt
    that those involved shared a general understanding about the
    crime."     Continuing to discuss the elements of conspiracy, the
    court     stated:   "You   need   not   find     that   a   defendant    agreed
    specifically to or knew about all the details of the crime . . . .
    But the [g]overnment must prove beyond a reasonable doubt that the
    defendant knew the essential features and general aims of the
    criminal venture."
    With the elements of conspiracy explained, the court
    then    discussed   jury   deliberation     procedures:      selection    of   a
    foreperson, the requirement that the verdict be unanimous, each
    juror's duty to decide the matter for him- or herself, and the
    need to examine and reexamine one's position while maintaining
    - 14 -
    one's honest convictions.      The court then discussed the verdict
    form:
    The verdict form that you will use is
    this one that I have prepared. Very simple
    form. It talks about Count I and Count II,
    and simply asks you whether you find Mr. Paz
    and Mr. Marrero guilty or not guilty as
    charged.
    I am also asking you another question.
    How much cocaine is involved in this
    conspiracy?    That's the question, and the
    answer must be one of these two. More than
    five kilos of cocaine, or less than five kilos
    of cocaine.   I don't want you to give me a
    specific. I just want you to tell me whether
    it's more than five or less than five. That's
    all.
    According to Paz and Marrero, the district court's error
    was twofold: first, it did not include drug quantity in its
    discussion of the elements of conspiracy, and, second, it did not
    reiterate the reasonable doubt standard in its discussion of the
    verdict form, when the court asked the jury to determine drug
    quantity.    This approach, they contend, permitted the jury to find
    drug quantity by a less stringent standard, thus violating their
    Fifth Amendment right to Due Process and their Sixth Amendment
    right to a jury verdict governed by the reasonable doubt standard.10
    10
    See Sullivan v. Louisiana, 
    508 U.S. 275
    , 278 (1993) ("It
    is self-evident, we think, that the Fifth Amendment requirement of
    proof beyond a reasonable doubt and the Sixth Amendment requirement
    of a jury verdict are interrelated.").
    - 15 -
    We review the instructions as a whole, not piecemeal.
    United States v. Melendez, 
    775 F.3d 50
    , 55 (1st Cir. 2014);
    
    Gonzalez, 570 F.3d at 21
    .          Assessing whether the jury was properly
    charged with the reasonable doubt standard, "the proper inquiry is
    not whether the instruction 'could have' been applied in an
    unconstitutional       manner,     but    whether        there    is    a   reasonable
    likelihood that the jury did so apply it."                     Victor v. Nebraska,
    
    511 U.S. 1
    , 6 (1994).
    We acknowledge that the instructions might have been
    better if the court had discussed drug quantity alongside the other
    elements   of   the     crime,     or    if    the     court   had     reiterated   the
    reasonable doubt standard when it instructed the jury to make a
    finding on drug quantity.               Nevertheless, the court repeatedly
    emphasized      the     reasonable        doubt        standard      throughout      the
    instructions.     The drug quantity determination was then grouped
    together with the court's explanation that the jury would be asked
    to determine whether the defendants were guilty of conspiracy, a
    determination that the instructions made unequivocally subject to
    the reasonable doubt standard.                Furthermore, the jury had a copy
    of   the   indictment        during     its    deliberations,        and    the    court
    emphasized that the accusations in the indictment, which included
    an   accusation       that   the   conspiracy          involved      more   than    five
    kilograms, had to be proved beyond a reasonable doubt.                      Hence, we
    do not think that there is "a reasonable likelihood that the jury
    - 16 -
    understood the instructions to allow conviction" without proof
    beyond a reasonable doubt of every element of the charged offense,
    including drug quantity.
    Contrary to Paz and Marrero's assertion, this case is
    distinguishable from United States v. Delgado-Marrero, 
    744 F.3d 167
    (1st Cir. 2014).         In Delgado, the court instructed the jury on
    the elements of conspiracy, but did not ask the jury to make a
    finding as to the quantity of drugs involved.               
    Id. at 183.
         After
    the jury deliberated and returned a guilty verdict, the court sent
    the jury back for a second deliberation to determine drug quantity,
    stating, "It's like another deliberation under the same terms and
    conditions."        
    Id. On appeal,
    the government argued that the
    district      court's     "same   terms    and    conditions"    instruction      was
    sufficient to convey to the jury that the reasonable doubt standard
    still applied.      
    Id. at 187.
          However, in large measure because the
    jury    had    already     returned    a   verdict    before     being   asked    to
    deliberate a second time, we held that instructional error had
    occurred.      "[G]iven the timing and manner in which the question
    was    presented,    the    jurors    understandably      may    have    failed    to
    appreciate that the additional question represented something more
    than an inconsequential afterthought . . . ."               
    Id. The facts
       here    differ      significantly    from   those     in
    Delgado.      The finding on drug quantity was made as part of the
    original deliberations, not following an initial verdict during
    - 17 -
    resumed deliberations.        Drug quantity was also included on the
    same verdict form as that used to determine the defendants' guilt
    or innocence on the substantive charges.           We do not think "there
    is a reasonable likelihood," 
    Victor, 511 U.S. at 6
    , that a juror
    in this case would have understood the instructions to permit the
    application of anything other than the reasonable doubt standard
    to the assessment of drug quantity.           Therefore, the court did not
    fail to charge the jury with the reasonable doubt standard on an
    element that increased the mandatory minimum or maximum sentences.
    III. Paz's Claims
    Paz argues that the evidence was insufficient to support
    his conviction and that the district court erroneously increased
    his BOL by two levels for use of a "special skill."
    A.   Sufficiency of the Evidence
    Our review of the sufficiency of the evidence is de novo.
    United States v. Rodríguez-Martinez, 
    778 F.3d 367
    , 371 (1st Cir.
    2015).     We view the evidence in the light most favorable to the
    verdict,    giving   "equal    weight    to    direct   and   circumstantial
    evidence."     United States v. Appolon, 
    715 F.3d 362
    , 367 (1st Cir.
    2013).      Importantly,   the    relevant    inquiry   is    not   whether   a
    reasonable jury could have acquitted the defendant, but rather
    whether a reasonable jury "could have found that the government
    proved each element of the crime beyond a reasonable doubt."              
    Id. (internal quotation
    marks omitted).
    - 18 -
    As we explained above, to convict Paz of conspiracy, the
    jury had to find beyond a reasonable doubt that "(1) a conspiracy
    existed, (2) the defendant had knowledge of the conspiracy, and
    (3) the defendant knowingly and voluntarily participated in the
    conspiracy."   
    Dellosantos, 649 F.3d at 116
    .   Paz does not dispute
    that a conspiracy existed and that he had knowledge of it.       His
    challenge to the sufficiency of the evidence is limited to the
    third element, under which the government had to prove that he
    intended to join the conspiracy and that he intended for its goals
    to be accomplished.   See 
    id. Paz advances
    the notion that he was
    indifferent to the conspiracy and lacked the requisite intent.   He
    contends that he was simply "contracted" to perform "work orders"
    for clavo-related "services."     He emphasizes that his services
    amounted to only seven to nine workdays scattered across several
    months, after which he was "never . . . seen or heard from again."
    There are many ways to show that a defendant intended to
    join and advance a conspiracy, even where the defendant never
    actually handled the drugs.     The defendant's intention to join
    "need not be express, but may be shown by circumstantial evidence."
    United States v. Portalla, 
    496 F.3d 23
    , 26 (1st Cir. 2007). Hence,
    "acts that furthered the conspiracy's purposes" may be evidence of
    the intent to join.   United States v. McDonough, 
    727 F.3d 143
    , 156
    (1st Cir. 2013).   The requisite intent may also be shown through
    the knowing provision of peripheral services that aid in one of a
    - 19 -
    conspiracy's     objectives,    like   the   objective    to   avoid   police
    detection.      
    Portalla, 496 F.3d at 27
    .         Ancillary functions like
    accounting, communications, and strong-arm enforcement are all
    examples of peripheral services that, when performed in the service
    of drug dealers, can support a conspiracy conviction.                  United
    States v. García-Torres, 
    280 F.3d 1
    , 4 (1st Cir. 2002).
    Despite the arguably ancillary nature of the services
    Paz provided, a reasonable jury could have concluded that Paz's
    actions   conveyed     his     intention     to   join   and   advance    the
    conspiracy.11      He participated in planning meetings where the
    intended use of his clavos -- drug smuggling -- was made explicit.
    He then constructed multiple clavos on two vessels designed for
    the specific purpose of storing and secreting cocaine.             On these
    facts, a jury could reasonably conclude that Paz intended his
    ingenious compartments to achieve their aim, namely, that they
    conceal hundreds of kilograms of cocaine being smuggled into Puerto
    Rico for distribution.       In addition, Paz guarded against sharing
    11 Paz's invocation of United States v. Moreland, 
    703 F.3d 976
    , 984 (7th Cir. 2012), is unpersuasive.      In Moreland, the
    Seventh Circuit distinguished between co-conspirators and aiders
    and abettors, writing, "[K]nowledge of a buyer's intention to
    commit a crime with a supplier's goods doesn't imply an agreement
    between the buyer and the seller that the buyer do so.       That
    knowledge, coupled with [supplying the goods,] could make him an
    aider and abettor of the buyer's crime but not, without more, a
    conspirator with the buyer." 
    Id. Paz fails
    to acknowledge that
    the something "more" required for a conspiracy conviction -- the
    intent to join the conspiracy -- may be found circumstantially,
    "by words or action." 
    García-Torres, 280 F.3d at 4
    .
    - 20 -
    secretive   information      with   someone    he     thought   untrustworthy:
    Moncho.     That fact would further support a reasonable jury's
    finding that Paz wanted his work to advance the conspiracy's
    objective of avoiding police detection.              No more was required for
    a reasonable jury to find that Paz in fact intended to join the
    conspiracy and advance its goals.
    Paz argues that it is unreasonable to conclude that he
    was a member of the conspiracy because members of the conspiracy
    did not consider him to be a member.            He points, inter alia, to
    evidence in the record that Retamar instructed Moncho not to speak
    with Paz over the telephone.         However, as the government notes,
    "the jury could have reasonably construed Retamar's testimony as
    showing his concern that police may have tapped Paz's telephone,
    unbeknownst to the latter."         In addition, based on the fact that
    Retamar invited Paz to join him on the conspiracy's largest drug-
    smuggling excursion -- the voyage to St. Croix to import 500
    kilograms of cocaine -- a reasonable jury could conclude that
    members of the conspiracy trusted Paz and considered him to be one
    of their own.
    Finally,   Paz    emphasizes      that    he   declined   Retamar's
    invitation to participate in the voyage to pick up 500 kilograms
    of cocaine near St. Croix and was "never . . . seen or heard from
    - 21 -
    again" after declining that invitation.12                     A conspirator need not
    know "all of the details of the conspiracy or participate[ ] in
    every act in furtherance of the conspiracy."                         United States v.
    Sanchez-Badillo,           
    540 F.3d 24
    ,     29    (1st   Cir.    2008)   (internal
    quotation          marks   omitted).           Furthermore,      an     "inactive    co-
    conspirator is presumed to be a continuing member of an ongoing
    conspiracy" unless he withdraws.13                    United States v. Ngige, 
    780 F.3d 497
    , 503 (1st Cir. 2015) (internal quotation marks omitted).
    Here,        Paz     essentially        argues        that,   because     his   active
    participation came to an end, he never joined the conspiracy at
    all.     But neither the fact that he declined to participate in one
    of the more dangerous aspects of the conspiracy (the drug run),
    nor    the    fact    that   his   active        involvement     ended   once   he   had
    completed the work he agreed to do, precludes a reasonable jury
    from finding that he joined the conspiracy when he built the clavos
    with the requisite knowledge and intent.
    12
    Relatedly, Paz insists it is unreasonable to find that he
    joined the conspiracy solely on the basis of his association with
    Delgado, the clavo-maker who joined Retamar on the drug-smuggling
    excursion. Of course, Paz is correct that mere association with
    a conspirator is not sufficient to prove beyond a reasonable doubt
    that a defendant is also a co-conspirator. See 
    Gonzalez, 570 F.3d at 22
    . Here, however, Paz was not merely an associate of Delgado,
    but a knowing participant in construction activities that advanced
    the conspiracy.
    13
    Withdrawing from a conspiracy requires that the conspirator
    "act affirmatively either to defeat or disavow the purposes of the
    conspiracy."   United States v. Pizarro-Berríos, 
    448 F.3d 1
    , 10
    (1st Cir. 2006).
    - 22 -
    Hence, the record contains ample evidence to support the
    jury's finding that Paz was a member of the conspiracy.
    B.   Sentence Enhancement
    Paz    appeals    the    two-level     sentence      enhancement    he
    received    for    "us[ing]   a     special    skill[   ]   in   a   manner   that
    significantly facilitated the commission or concealment of the
    offense."     U.S.S.G. § 3B1.3.          We review the district court's
    factual findings for clear error.             United States v. Prochner, 
    417 F.3d 54
    , 60 (1st Cir. 2005).
    The Guidelines define a "special skill" as "a skill not
    possessed by members of the general public and usually requiring
    substantial education, training or licensing.                    Examples would
    include    pilots,    lawyers,      doctors,    accountants,      chemists,    and
    demolition experts."      U.S.S.G. § 3B1.3 cmt. n.4.             Paz argues that
    he and his assistants were "hired to put covers on already existing
    cavities," and that the skills required to do that do not meet the
    meaning of a "special skill" as defined in the Guidelines.                     The
    record belies Paz's modest characterization of his work.                       His
    clavos were sophisticated compartments whose construction required
    more than a layperson's capabilities in carpentry, circuitry, and
    hydraulics.       As Agent Reyes explained at trial, Paz had replaced
    a wooden table (a piece of wood covering an open space) in the
    floor of the Such Is Life with a different, piston-operated table
    powered by a car battery.           To access the compartment underneath,
    - 23 -
    a person had to complete an electrical circuit: "out of those
    screws [in the floor] . . . they selected two screws that went
    down and connected to [other] screws to make contact.                       So the
    person who was to open that needs to know which screws to touch
    with which cables to open or close it.                There was no way for me
    from the outside to figure it out, because there's so many screws
    to try to make a combination. . . .                 I'd be playing the Lotto."
    The district court did not clearly err in determining that a member
    of the general public would lack the skills necessary to create
    such a mechanism.
    Paz emphasizes that the offense here is conspiracy -- an
    agreement -- and contends that no special skill is required to
    make an agreement.           The Guideline, however, applies either to
    facilitating the crime or concealing it.                 The purpose of Paz's
    work was to conceal the conspiracy by making drugs aboard the Such
    Is Life and the Sheymarie difficult to uncover.                    As indicated by
    the testimony of Agent Reyes, Paz achieved that purpose.                   In sum,
    there was no error in the district court's application of the two-
    level enhancement for use of a special skill.
    IV. Marrero's Claims
    Marrero makes three arguments particular to his appeal.
    First,   he    challenges     the   constitutionality         of   the   conspiracy
    statutes      as   applied    to    him.     Second,     he    contends     that   a
    Petrozziello error resulted in the improper admission of hearsay
    - 24 -
    evidence and gave rise to a prejudicial variance.       Finally, he
    argues that the district court should have granted his Rule 29
    motion for cumulative error.     We address these arguments in turn.
    A.   As Applied Challenge to the Conspiracy Statutes
    Marrero argues that the conspiracy statutes, 21 U.S.C.
    §§ 846 and 963, are unconstitutional as applied to him because
    those provisions did not give him fair notice of what constitutes
    participation in a conspiracy.    In other words, he asserts that he
    did not have fair notice that, by knowingly building secret
    compartments to smuggle drugs for a drug conspiracy, he could be
    held accountable as a co-conspirator.14
    Marrero is correct that the Fifth Amendment Due Process
    Clause gives him a "right to fair warning of that conduct which
    will give rise to criminal penalties."      Marks v. United States,
    
    430 U.S. 188
    , 191 (1977).   In claiming a violation of that right,
    Marrero relies in particular on the vagueness doctrine, the aspect
    of the fair warning requirement that "bars enforcement of 'a
    statute which either forbids or requires the doing of an act in
    14Since Marrero raises his constitutional argument for the
    first time on appeal, our review is for plain error. United States
    v. Diaz, 
    519 F.3d 56
    , 65 (1st Cir. 2008). Marrero must show "(1)
    that an error occurred (2) which was clear or obvious and which
    not only (3) affected the defendant's substantial rights, but also
    (4) seriously impaired the fairness, integrity, or public
    reputation of the judicial proceeding."          United States v.
    Henderson, 
    320 F.3d 92
    , 102 (1st Cir. 2003).
    - 25 -
    terms so vague that men of common intelligence must necessarily
    guess at its meaning and differ as to its application.'"                  United
    States v. Lanier, 
    520 U.S. 259
    , 266 (1997) (Souter, J.) (quoting
    Connally v. Gen. Constr. Co., 
    269 U.S. 385
    , 391 (1926)).15
    Judicial        interpretations      may   clarify    an   otherwise
    imprecise statute.        
    Id. As Marrero
    concedes, the parameters of
    the conspiracy statutes are articulated in our case law.                    See,
    e.g., 
    Burgos, 703 F.3d at 11
    (explicating the third element of
    conspiracy,     knowing     and    voluntary      participation).     Marrero
    nevertheless asserts that there is "no clear line" between lawful
    work on a vessel -- such as installing a GPS, fixing engines, or
    building cabinets -- and conduct that "make[s] me a member of a
    conspiracy by mere knowledge of the improper intended use of the
    vessel and/or my services."
    Marrero's argument, however, is flawed because he was
    not convicted for "mere knowledge" of the drug conspiracy and the
    conspirators'    intent     to    use   his   services   for   unlawful    ends.
    Rather, he was convicted because he was a knowing participant in
    the conspiracy.    Marrero's attempt to characterize his conviction
    15"There are three related manifestations of the fair warning
    requirement," namely, the vagueness doctrine, the rule of lenity,
    and the principle that a court's "novel construction of a criminal
    statute" cannot be applied "to conduct that neither the statute
    nor any prior judicial decision has fairly disclosed to be within
    its scope." 
    Lanier, 520 U.S. at 266
    (discussing "fair warning" in
    the context of Fourteenth Amendment Due Process).
    - 26 -
    as an arbitrary distinction between otherwise lawful activities
    therefore    misses    the     mark.   In    the      ancillary   functions    he
    identifies, it is not the nature of the defendant's services but
    the intent with which they are provided that distinguishes the
    innocent vendor from the co-conspirator.
    Hence, Marrero's constitutional challenge fails.                 The
    statutes, in conjunction with our case law, gave him fair warning
    that    knowingly    participating     in   a   drug     conspiracy   with    the
    requisite intent could expose him to criminal penalties.16
    B.   Prejudicial Variance
    Marrero contends that the district court erroneously
    admitted into evidence "hearsay about unrelated conspiracies and
    this amounts to prejudicial variance."           We will untangle Marrero's
    argument and take the hearsay objection first.                    We will then
    address     the     multiple    conspiracy      and     prejudicial   variance
    arguments.
    16
    To the extent his constitutional argument is really a
    mislabeled challenge to the sufficiency of the evidence, his
    challenge fails. A reasonable jury could have found that he was
    not "indifferent" to the conspiracy but was, rather, a member of
    it. See 
    Burgos, 703 F.3d at 11
    . The jury could have determined
    that Marrero "ma[d]e it his own," 
    id., by building
    secret
    compartments that he knew would advance the conspiracy's
    objectives of smuggling cocaine for distribution while avoiding
    police detection. Marrero further demonstrated his intent to join
    the conspiracy by agreeing to join Retamar on the drug run.
    Although he later changed his mind and did not go on the drug run,
    his initial agreement would nevertheless support a reasonable
    jury's conclusion that he was a member of the conspiracy.
    - 27 -
    1.   Hearsay
    Marrero challenges the district court's decision to
    admit the hearsay testimony of his co-conspirator, Paz.              Although
    hearsay testimony generally is not admissible, an out-of-court
    statement made by a defendant's co-conspirator "during and in
    furtherance of the conspiracy" is not hearsay and may be introduced
    into evidence.       Fed. R. Evid. 801(d)(2)(E), 802.          To admit such
    evidence, the district court must determine by a preponderance of
    the evidence that the declarant and the defendant were members of
    the same conspiracy and that the statement was made in furtherance
    of the conspiracy.       See United States v. Ciresi, 
    697 F.3d 19
    , 25
    (1st Cir. 2012) (articulating the preponderance standard); United
    States   v.    Goldberg,     
    105 F.3d 770
    ,    775-76   (1st   Cir.   1997)
    (explaining that, following United States v. Baines, 
    812 F.2d 41
    ,
    42 (1st Cir. 1987), statements of a co-conspirator made before the
    defendant joined the conspiracy are also admissible).                 In this
    circuit, the district court's decision to allow testimony under
    the co-conspirator exception is called a Petrozziello ruling,
    after United States v. Petrozziello, 
    548 F.2d 20
    (1st Cir. 1977).
    A court may provisionally admit a statement under Rule
    801(d)(2)(E) and defer its final Petrozziello ruling until the
    close of evidence.           
    Ciresi, 697 F.3d at 25
    .         "To preserve a
    challenge to a district court's Petrozziello ruling, a defendant
    must object on hearsay grounds when his or her co[-]conspirator's
    - 28 -
    statement is provisionally admitted and must renew the objection
    at the close of evidence."         
    Id. at 25-26.
       Preserved challenges
    are reviewed for clear error; unpreserved challenges, for plain
    error.   
    Id. at 26.
    Marrero has specifically identified only one hearsay
    statement that he contends should not have been admitted: Retamar's
    testimony that, at their first meeting, Paz told him "it would be
    done," meaning, the clavo would be built.          Marrero objected when
    that statement was admitted into evidence, citing Petrozziello,
    and renewed his objection at the close of evidence.              Hence, our
    review is for clear error.
    The preponderance of the evidence easily supports the
    district   court's    assessment    that   Paz   and   Marrero    were   co-
    conspirators, just as it supports the court's conclusion that Paz's
    statement, "it would be done," was made in furtherance of the
    conspiracy.   First, Retamar's testimony made clear that Paz and
    Marrero were co-conspirators.         Retamar testified that Paz and
    Marrero attended multiple planning meetings with him to discuss
    building clavos, and that, working together, Paz and Marrero built
    clavos in both the Sheymarie and the Such Is Life.         Second, it is
    more likely than not that Paz's statement, "it would be done," was
    made in furtherance of the conspiracy because it could easily be
    construed as a promise that he and his assistant, Marrero, would
    construct secret compartments to aid Retamar in smuggling hundreds
    - 29 -
    of kilograms of cocaine into Puerto Rico.                     Therefore, the court
    did not err, much less clearly err, in admitting Paz's statement
    into evidence.
    2.       Multiple Conspiracies and Prejudicial Variance
    Marrero argues that the district court admitted evidence
    of multiple uncharged conspiracies, giving rise to a variance and
    prejudicial spillover.              A variance occurs when the evidence at
    trial    "proves        different       facts    than     those   alleged         in   the
    indictment," such as when the indictment charges one conspiracy
    but the evidence supports multiple conspiracies.                     
    Dellosantos, 649 F.3d at 116
    (internal quotation marks omitted).                        Three factors
    guide our assessment of whether the evidence was sufficient to
    prove    that     a    set    of   criminal     activities    comprised       a    single
    conspiracy: "(1) the existence of a common goal, (2) overlap among
    the activities' participants, and (3) interdependence among the
    participants."          
    Ciresi, 697 F.3d at 26
    .            A single conspiracy may
    exist even if the participants or their respective roles change
    over time.      
    Id. Even if
    a defendant proves a variance, he must also prove
    that it was prejudicial.            
    Dellosantos, 649 F.3d at 116
    .            Prejudice
    may result from evidentiary spillover: "the transference of guilt
    to   a   defendant           involved     in    one     conspiracy    from    evidence
    incriminating         defendants     in    another      conspiracy     in    which     the
    particular defendant was not involved."                   United States v. Wihbey,
    - 30 -
    
    75 F.3d 761
    ,   774   (1st   Cir.     1996)    (internal   quotation   marks
    omitted).     To prevail on an evidentiary spillover claim, the
    defendant must prove "prejudice so pervasive that a miscarriage of
    justice looms."      United States v. Levy-Cordero, 
    67 F.3d 1002
    , 1008
    (1st Cir. 1995) (internal quotation marks omitted).
    Marrero attempts to prove a variance by dividing the
    facts temporally into six sequential conspiracies corresponding to
    changes in personnel and discrete drug runs.17                  The evidence,
    however,    points    to   a    single     conspiracy    involving   multiple
    transactions and players.18        First, Marrero concedes that all six
    of the conspiracies he attempts to distill from the fact pattern
    share a common goal, namely, to sell drugs for profit.                Second,
    there is a clear overlap among participants: either Retamar or
    Irizarry was involved in every aspect of the conspiracy, often
    17The six conspiracies Marrero identifies are: (1) Retamar
    and Irizarry's drug smuggling work for their former employer; (2)
    Retamar's work (independent of Irizarry) for their former
    employer; (3) Retamar and Irizarry's importation of twenty
    kilograms of cocaine using one of their former employer's boats;
    (4) the conspiracy charged in the indictment, namely, to import
    and distribute more than five kilograms of cocaine using the
    Sheymarie and the Such Is Life; (5) the conspiracy Retamar ran in
    the time between his split with Irizarry and his arrest; and (6)
    the sting operation.
    18
    The government contends that Marrero forfeited his multiple
    conspiracies argument for, among other reasons, failing to request
    a multiple conspiracy jury instruction. Since Marrero's argument
    cannot succeed on the merits, we need not decide whether he
    forfeited it.
    - 31 -
    working    in   tandem.        Finally,      the   participants      worked
    interdependently.       For   example,   Marrero   provided    the   secret
    compartments that Retamar and Irizarry then used to smuggle drugs.
    Looking "to the totality of the evidence to see if it supports a
    finding of a single conspiracy," 
    Ciresi, 697 F.3d at 26
    (internal
    quotation marks omitted), we think the evidence at trial proved
    only one ongoing conspiracy that began when Retamar and Irizarry
    met and ran until the Such Is Life was confiscated.           Hence, there
    was no variance.19
    C.   Cumulative Error
    In his final argument, for cumulative error, Marrero
    identifies six motions he submitted to the district court and seeks
    to incorporate them by reference.20       The substantive argument for
    19Marrero's best case for a variance is the evidence
    pertaining to Retamar and Irizarry's work for their former
    employer. However, the evidence presented on those facts -- the
    so-called conspiracies #1 and #2 -- comprised no more than a
    handful of pages of the transcript at the very beginning of
    Retamar's two-day testimony.    Furthermore, that portion of the
    testimony was aimed at establishing nothing more than how Retamar
    and Irizarry met and how each knew that the other was involved in
    drug trafficking.    Marrero has not proved that the prejudice
    resulting from that testimony was "so pervasive that a miscarriage
    of justice looms."     
    Levy-Cordero, 67 F.3d at 1008
    (internal
    quotation marks omitted).
    20The six motions are: a motion for judgment of acquittal
    and/or for new trial (DE 250); two motions to dismiss the
    indictment (DE 244, 246); two motions in limine regarding the
    alleged improper use of transcripts (DE 231, 247); and a motion
    for a sentence below the statutory minimum (DE 363).
    - 32 -
    cumulative error is limited to the following in his opening brief:
    "We adopt said documents by reference and request this Honorable
    Court to evaluate the arguments presented therein, both de novo as
    well as non harmless cumulative error." As the government asserts,
    incorporation by reference is an ineffective method of preserving
    arguments for appeal.     See United States v. Orrego-Martinez, 
    575 F.3d 1
    , 8 (1st Cir. 2009) (stating that incorporation of arguments
    by   reference   has   been   "consistently   and   roundly   condemned"
    (internal   quotation    marks   omitted)).     Marrero   attempts    to
    elaborate in his reply brief, but he does not sufficiently develop
    an argument in support of any of the six motions.21           Hence, his
    cumulative error argument, like the arguments in the motions he
    seeks to incorporate by reference, is waived.        See United States
    v. Zannino, 
    895 F.2d 1
    , 17 (1st Cir. 1990) ("[I]ssues adverted to
    in a perfunctory manner, unaccompanied by some effort at developed
    argumentation, are deemed waived.").
    21In support of one of the motions Marrero seeks to
    incorporate by reference -- a motion to dismiss Count One of the
    indictment because it allegedly used language permitting the jury
    to convict him for guilt by association -- he does include a
    footnote quoting, but not discussing, Joint Anti-Fascist Refugee
    Comm. v. McGrath, 
    341 U.S. 123
    , 178-79 (1951), and United States
    v. Allen, 
    670 F.3d 12
    , 16 (1st Cir. 2012). He notes in his reply
    brief on appeal, "We understand that the nature of the defect in
    the Indictment is patent and requires no major argumentation." We
    reject this attempt to bypass our well-established waiver rules.
    - 33 -
    V. Conclusion
    We conclude that the district court properly instructed
    the jury on the elements of conspiracy and adequately charged the
    jury to apply the "beyond a reasonable doubt" standard to its
    finding on drug quantity.         Both of Paz's individual challenges
    fail: the evidence was sufficient to support his conviction and
    the   district   court    did   not   err   in   applying   the   two-level
    enhancement for a special skill.       Marrero's challenges also fail:
    his argument that the conspiracy statutes are unconstitutional as
    applied to him is meritless, his hearsay and prejudicial variance
    arguments are unpersuasive, and his cumulative error arguments are
    waived.     Thus, the defendants' convictions and sentences are
    affirmed.
    So ordered.
    - 34 -