United States v. Vicente-Arias , 809 F.3d 686 ( 2015 )


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  •            United States Court of Appeals
    For the First Circuit
    Nos. 13-2155,
    13-2500,
    14-1040,
    14-1078
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    JOSÉ PEÑA-SANTO,
    JOSÉ RAMÓN VICENTE-ARIAS,
    JONATHAN GIL-MARTÍNEZ,
    MANUEL LIRIANO-DE LA CRUZ,
    Defendants, Appellants.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Jay A. García-Gregory, U.S. District Judge]
    Before
    Torruella, Selya, and Dyk,*
    Circuit Judges.
    Carlos M. Sánchez-La Costa, for appellant Peña-Santo.
    Barbara J. Sweeney, for appellant Vicente-Arias.
    Kenneth Seiger, for appellant Gil-Martínez.
    Leslie W. O'Brien, for appellant Liriano-de la Cruz.
    Tiffany V. Monrose, 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.
    *
    Of the Federal Circuit, sitting by designation.
    October 14, 2015
    -2-
    TORRUELLA, Circuit Judge.       Defendants-Appellants José
    Peña-Santo ("Peña-Santo"), José Ramón Vicente-Arias ("Vicente-
    Arias"), Jonathan Joel Gil-Martínez ("Gil-Martínez"), and Manuel
    Liriano de la Cruz ("Liriano") (collectively "Appellants") were
    jointly tried and convicted of conspiring to import cocaine and
    heroin into the United States, in violation of 
    21 U.S.C. §§ 952
    (a),
    960, and 963, and conspiring to possess with intent to distribute
    cocaine and heroin on board a vessel subject to the jurisdiction of
    the United States, in violation of 
    46 U.S.C. §§ 70503
    (a)(1),
    70504(b)(1), 70506(a).    Peña-Santo and Liriano were additionally
    convicted of illegally reentering the United States, in violation
    of 
    8 U.S.C. § 1326
    (a)(2) and (b)(1).        Appellants appeal their
    conspiracy convictions mainly on the grounds that improper expert
    testimony and the government's conduct warrant reversal of their
    convictions. They also assign error to the denial of their motions
    for judgments of acquittal.   Finally, Gil-Martínez challenges the
    substantive reasonableness of his sentence.        We have reviewed
    Appellants' claims carefully and do not find merit in any of them.
    Accordingly, we affirm.
    I. Facts1
    On the night of April 12, 2012, Ryan Perry, a Customs and
    Border Patrol ("CBP") agent working as a camera operator and
    1
    We briefly summarize the relevant facts, reserving for our
    analysis a more detailed discussion of the facts relevant to each
    issue presented on appeal.
    -3-
    patrolling the waters from an aircraft, detected a target of
    interest with "lights out" seventeen nautical miles off the coast
    of Dorado, Puerto Rico, around 10:00 p.m.          The target was a blue-
    colored wooden yola,2 between twenty and twenty-five feet long,
    riding "very low" in the water, and carrying two motors and six
    fuel drums.   A Maritime Patrol aircraft, along with the U.S. Coast
    Guard marine unit, the Puerto Rico Joint Forces of Rapid Action
    ("FURA,"    for   its    Spanish   acronym),     and   a   CBP    helicopter,
    coordinated an intercept of the suspect vessel.              When the Coast
    Guard marine unit approached the vessel, the individuals were
    moving "erratically" on the boat.          Perry saw "objects being thrown
    from the yola." Another officer who joined the interception of the
    vessel, Luke Berguis from the Coast Guard, reported seeing "large,
    heavy bags being tossed over by the multiple crew members," as well
    as "small backpacks" and "smaller objects" that looked like cell
    phones and GPS units.      Agent René Galarza, of U.S. Immigration and
    Customs    Enforcement    ("ICE"),   after     turning     the   helicopter's
    spotlight on the vessel also saw "individuals dumping what appeared
    to be bales."
    At approximately 11:39 p.m., nearly four miles off the
    coast of Dorado, the Coast Guard marine unit intercepted the yola,
    which had six men on board, and ordered the men to raise their
    2
    A yola is a small fishing boat. For purposes of this opinion,
    "yola" and "vessel" will be used interchangeably.
    -4-
    hands, which they did after some initial hesitance.    FURA, along
    with the Coast Guard marine unit, later retrieved the objects that
    had been thrown into the water, which turned out to be "six heavy
    dark colored [gym] bags wrapped in duct tape" that each had a
    "block shape."   Inside the bags were eight kilograms of 50% pure
    heroin packaged in eight egg shapes and 146.5 kilograms of 74.8%
    pure cocaine packaged in 131 brick shapes. The six men, identified
    as Peña-Santo, Vicente-Arias, Gil-Martínez, Liriano, Bonifacio
    Toribio-Almonte, and Alejandro Difot-Santos, all citizens of the
    Dominican Republic, were arrested.
    A   grand jury returned a superseding indictment charging
    the six men with conspiracy to import cocaine and heroin into the
    United States, in violation of 
    21 U.S.C. §§ 952
    (a), 960, and 963
    (Count 1), and conspiracy to possess with intent to distribute
    cocaine and heroin on board a vessel subject to the jurisdiction of
    the United States, in violation of      
    46 U.S.C. §§ 70503
    (a)(1),
    70504(b)(1), 70506(a) (Count 2).   Peña-Santo and Liriano were also
    charged with illegally reentering the United States, in violation
    of 
    8 U.S.C. § 1326
    (a)(2), (b)(1), respectively (Counts 3 and 4).3
    Difot-Santos and Toribio-Almonte pleaded guilty while Appellants
    were jointly tried.
    3
    Peña-Santo and Liriano stipulated to the fact that they had been
    previously removed from the United States and that they had no
    petition pending with the U.S. Citizenship and Immigration Services
    to enter the United States lawfully. Peña-Santo further stipulated
    to the fact that he had a previous felony conviction.
    -5-
    At trial the government presented the testimony of Perry,
    Berghuis, Galarza, Andrew Resk, and Joel Candelario, all of whom
    participated in the interception of the yola on April 12, 2012.
    Berghuis testified that wooden boats with low profiles and no
    navigation lights, such as the yola used by Appellants, are harder
    to see and to pick up on radar.             He further testified that
    Appellants' yola was painted blue on both the outside and the
    inside, which made it "very hard to see at night" from an "aerial
    aspect"; that it had excessive horsepower and fuel for its size;
    and that it did not have any fishing or other recreational gear on
    board.   Instead, it carried multiple open condoms, which, based on
    his experience, are often used to keep dry small objects such as
    wallets and cell phones.        Berghuis also identified Appellants in
    court as four of the six men on board the yola when it was
    intercepted and testified that he observed that more than one
    individual was needed to lift the bags which had been thrown
    overboard when the yola was approached by law enforcement.
    The government also presented the testimony of Víctor
    Taboada, who was on patrol on the Coast Guard Cutter Cushing on the
    night of the interception; Abel Nasser, who works with ICE and the
    Department of Homeland Security; and Carmen Cacho ("Ms. Cacho"), a
    chemist employed by CBP.        They testified about the type, purity,
    quantity,   and   weight   of   the    narcotics   recovered   during   the
    interception of the yola.
    -6-
    In addition, the government presented the testimony of
    Drug Enforcement Administration agent Christopher Conchin ("Agent
    Conchin"), who had experience in narcotic cases and international
    maritime interdictions. The district court qualified Agent Conchin
    as an expert witness and allowed him to testify as to the value,
    packaging, and mode of transportation of narcotics.            Agent Conchin
    testified regarding how narcotics' street price depends on the
    place of sale. He also testified that drugs are usually wrapped in
    plastic and packaged in same-size bricks.               As to the mode of
    transportation, Agent Conchin testified that drugs are typically
    transported in go-fast boats or yolas, which are usually painted
    blue to blend in with the water, have more than one motor (usually
    two or three), are either open or have a compartment to "put stuff
    underneath," and carry numerous gasoline drums that are switched
    off during the voyage.          In addition, he testified that vessels
    transporting narcotics generally have four to six people on board
    and that each has a specific duty.         He further testified that, in
    his   experience,   "in   the    cases   that   [he   has]   worked,   .   .   .
    individuals not connected with the trafficking of narcotics" have
    not been involved in the transportation.
    After a four-day jury trial, Appellants were found guilty
    on all charges.      Appellants moved for a judgment of acquittal
    -7-
    pursuant to Fed. R. Crim. P. 29, which the district court denied.4
    The district court sentenced Peña-Santo to 120 months in prison,
    Vicente-Arias to 130 months, Gil-Martínez to 192 months, and
    Liriano to 240 months.        In addition, they were each sentenced to
    five years of supervised release.         These timely appeals followed.
    II. Discussion of Appellants' Claims
    A.   Expert Testimony
    1.    Background
    The government intended Agent Conchin to testify as to
    "the quantity of the narcotics, the value of the narcotics, and
    . . . to the fact that [Appellants] weren't just by happenstance"
    in the vessel.    Appellants questioned the need for his testimony,
    arguing that the question before the jury of whether they were part
    of a conspiracy to distribute drugs did not require complex
    insight.   The district court allowed the witness to testify only
    with respect to the value, packaging, and mode of transportation of
    drugs.
    At    trial,   Agent    Conchin    testified   that,   in   his
    experience, random people unconnected to drug trafficking would not
    be on board vessels with drugs.       According to him,
    [t]he people that are on those boats are there
    for one purpose, and that's to get the drugs
    to where they're going, and they're there for
    protection. They're there to switch out the
    4
    They also requested a new trial pursuant to Fed. R. Crim. P. 33,
    which was also denied.
    -8-
    hoses like I mentioned, because you can't do
    it with just [one] person.      You have the
    captain who is the navigator to get you to
    where it's going, the exact point. You have a
    mechanic in case it breaks down and you have
    problems on the water. Everybody has a duty,
    a specific duty.
    Appellants claim that the district court abused its
    discretion in allowing Agent Conchin to testify about the different
    roles of individuals on board vessels transporting drugs.     They
    argue that this testimony should have been stricken from the record
    because it exceeded the scope of the topics allowed by the district
    court.   In addition, they claim that Agent Conchin improperly
    identified the roles of the Appellants in the charged conspiracy
    without having personal knowledge of it and that he addressed the
    ultimate issue for the jury -- whether Appellants were members of
    the conspiracy and possessed the intent to import and distribute
    narcotics -- which is prohibited by Rule 704(b) of the Federal
    Rules of Evidence and constitutes reversible error pursuant to this
    court's holdings in United States v. Meises, 
    645 F.3d 5
     (1st Cir.
    2011); United States v. Flores-De-Jesús, 
    569 F.3d 8
     (1st Cir.
    2009); and United States v. Casas, 
    356 F.3d 104
     (1st Cir. 2004).
    We disagree.
    2.   Applicable Law and Analysis
    It is well established that the district court "enjoys
    leeway in deciding to admit or exclude expert testimony."   United
    States v. Ladd, 
    885 F.2d 954
    , 959 (1st Cir. 1989).      Rulings on
    -9-
    preserved    evidentiary    objections     are    reviewed    for    abuse    of
    discretion.    Casas, 
    356 F.3d at 113
    .            Review of unobjected-to
    evidentiary rulings is for plain error.           
    Id.
       Under this exacting
    standard, an appellant must show that (1) there was an error,
    (2) which was clear or obvious, (3) that affected his substantial
    rights, and (4) also seriously impaired the fairness, integrity, or
    public reputation of judicial proceedings.              United States v. De
    Jesús-Viera, 
    655 F.3d 52
    , 57 (1st Cir. 2011).            Because Appellants
    did not meaningfully object to the testimony they now challenge,
    our review is for plain error.
    Appellants'    first   argument      --   that   Agent    Conchin's
    testimony was inadmissable because it exceeded the scope of the
    topics allowed by the district court -- falls flat at the outset.
    The district court allowed Agent Conchin to testify about the "mode
    of   transportation"   of    drugs.       Appellants     cannot      show    that
    interpreting "mode of transportation" to include not only the
    physical description of vessels used to transport drugs, but also
    the process itself of transporting drugs in such vessels and the
    roles people perform while transporting the drugs amounts to error,
    much less clear or obvious error.         Thus, Appellants' claim cannot
    survive plain-error review.
    Appellants' second argument suffers the same fate.               "For
    expert testimony to be admissible under Fed. R. Evid. 702, it must
    'be relevant to the task at hand' and helpful to the jury in its
    -10-
    deliberations."    United States v. García-Morales, 
    382 F.3d 12
    , 18
    (1st Cir. 2004) (quoting United States v. López-López, 
    282 F.3d 1
    ,
    14 (1st Cir. 2002)).         This court has approved the admission of
    expert testimony regarding "the operation of criminal schemes and
    activities" in drug trafficking cases, finding such testimony
    relevant and "helpful to juries in understanding some obscure or
    complex aspect of the crime."         
    Id. at 18-19
     (quoting United States
    v. Montas, 
    41 F.3d 775
    , 783 (1st Cir. 1994) (noting that "expert
    testimony regarding the description of a typical drug network [is]
    relevant to provide context to the jury in evaluating the offenses
    charged" (alteration in original) (internal quotation marks and
    citation omitted) (quoting United States v. Clarke, 
    24 F.3d 257
    ,
    269 (D.C. Cir. 1994)); see also, e.g., Flores-de-Jesús, 
    569 F.3d at 26
       (holding   that   the   expert    witness   "properly   described   the
    operation of drug points generally, including the various 'roles'
    typically involved in an intricate drug conspiracy and the practice
    of storing drugs intended for sale"); Ladd, 
    885 F.2d at 960
    (holding that because "jurors are not expected to be familiar with
    the idiom and workings of the heroin community . . . [e]xpert
    interpretation of drug jargon and practices, supplied by one versed
    in the business, has often been admitted to assist the trier of
    fact in drug-trafficking cases").
    The leeway enjoyed by the district court in determining
    the scope of expert witness testimony is limited by Rule 704(b) of
    -11-
    the Federal Rules of Evidence, which prohibits an expert witness
    from testifying that a "defendant did or did not have the mental
    state or condition that constitutes an element of the crime
    charged."     Fed. R. Evid. 704(b).         "This bar does not, however,
    apply to 'predicate facts from which a jury might infer such
    intent.'" United States v. Schneiderhan, 
    404 F.3d 73
    , 81 (1st Cir.
    2005) (quoting United States v. Valle, 
    72 F.3d 210
    , 216 (1st Cir.
    1995)).
    Here, Agent Conchin     provided proper expert testimony.
    Appellants    do   not   contest   that    the   challenged   testimony   was
    relevant. In addition, because the nature of narcotics trafficking
    by vessels is likely outside the knowledge of the average layman,
    we find that Agent Conchin's testimony was likely to assist the
    jury in understanding the evidence or determining a fact at issue.
    See Fed. R. Evid. 702; Ladd, 
    885 F.2d at 960
    .
    Furthermore, contrary to Appellants' contentions, Agent
    Conchin's testimony was not disallowed by Meises, Flores-de-Jesús,
    or Casas. In those cases we "particularly condemned testimony from
    . . . agent[s], not based on personal knowledge, describing the
    roles played in the drug conspiracy by individual defendants"
    because "[s]uch descriptions amount to impermissible testimony from
    the agent[s] 'that each of the defendants was guilty of the
    conspiracy charged.'"      Meises, 
    645 F.3d at 13
     (quoting Casas, 
    356 F.3d at 119
    ); see also Flores-de-Jesús, 
    569 F.3d at 24
     (holding
    -12-
    that the court erred in allowing the expert witness to identify the
    appellants by name and role in the conspiracy, where this testimony
    was not based on his personal knowledge); Casas, 
    356 F.3d at 118, 120
     (stating that the agent's testimony, which identified the roles
    of each defendant in the drug conspiracy despite lacking personal
    knowledge    of     it,    was   not   an   appropriate   subject    for   expert
    testimony). Unlike in the cases cited by Appellants, Agent Conchin
    did not identify Appellants' roles in the charged conspiracy, nor
    did he even refer to Appellants in particular or to their yola.
    Rather,     based     on     his   experience     in   narcotics     cases    and
    international maritime interdictions, he referred to "the people
    that are on those boats" as he testified about the general roles
    involved in the transportation of drugs by vessels.                 Thus, he did
    not need to have personal knowledge of Appellants' specific roles
    in the charged conspiracy; his testimony was in line with our
    precedent. See Flores-de-Jesús, 
    569 F.3d at 26
     (allowing an expert
    witness to describe "the operation of drug points generally,
    including the various 'roles' typically involved in an intricate
    drug conspiracy"); García-Morales, 
    382 F.3d at 18-19
    ; Ladd, 
    885 F.2d at 960
    .
    In addition, Agent Conchin's testimony did not encroach
    upon the jury's factfinding function regarding the ultimate issue
    of guilt. He merely provided facts from which the jury could infer
    culpable intent.          See Schneiderhan, 
    404 F.3d at 81
    ; United States
    -13-
    v. DiMarzo, 
    80 F.3d 656
    , 659-60 (1st Cir. 1996) (holding under
    similar circumstances that the agent's testimony that "in his
    experience,    innocent   observers   are   not   invited   to   accompany
    criminals engaged in completing a drug deal" did not "encroach upon
    the jury's factfinding function regarding the ultimate issue of
    guilt"); see also United States v. Valencia-Amezcua, 
    278 F.3d 901
    ,
    909 (9th Cir. 2002) (allowing expert witness to testify about the
    "aversion    of   large-scale   methamphetamine    producers     to   allow
    unaffiliated individuals near clandestine operations"). Moreover,
    the district court clearly instructed the jury that "mere presence"
    on the yola was insufficient to establish guilt and that it was for
    the jury to decide whether the government had met its burden of
    proving the necessary mens rea.          See DiMarzo, 
    80 F.3d at 660
    .
    Therefore, there was no error, plain or otherwise, in allowing
    Agent Conchin's testimony.
    We note, however, one improper statement made by Agent
    Conchin     during   cross-examination.      Because   Agent     Conchin's
    descriptions about drug trafficking referred to millions of dollars
    of profit, Liriano's defense counsel asked Agent Conchin in cross-
    examination whether he knew if Liriano had any possessions, such as
    a house or jewelry.       Agent Conchin began to respond, "To answer
    your question, obviously people that transport drugs such as your
    client," but did not finish his response because he was immediately
    interrupted by defense counsel, who -- although he did not object
    -14-
    to Agent Conchin's statement -- said, "That's not my question." On
    appeal, Peña-Santo -- but not Liriano -- claims that this response
    constituted improper testimony on his guilt.            Because Peña-Santo
    neither objected to nor moved to strike to the statement, we review
    only for plain error.        De Jesús-Viera, 655 F.3d at 57.         Peña-
    Santos's claim fails under that stringent standard because he is
    unable to satisfy plain-error review's third and fourth prongs;
    that is, that it affected his substantial rights and that it
    seriously affected the fairness, integrity, or public reputation of
    the judicial proceedings. Id. Such an effect cannot be attributed
    to a "single, isolated [and fleeting] statement" like this one,
    which was made in response to a question by defense counsel
    regarding a matter outside the scope of Agent Conchin's testimony.
    See United States v. Trinidad-Acosta, 
    773 F.3d 298
    , 307 (1st Cir.
    2014).
    B.   Sufficiency of the Evidence
    Appellants claim reversible error by the district court
    in   the   denial   of   their   respective   motions   for   judgments   of
    acquittal.      See   Fed. R. Crim. P. 29.         They argue that the
    government demonstrated only that they were "merely present" on the
    vessel and that there was no evidence that they agreed to import or
    possess with intent to distribute the drugs.        They also claim that
    the evidence presented at trial was consistent with their defense,
    -15-
    namely, that they were attempting to enter the United States
    illegally.     We disagree.
    1.    Standard / Scope of Review
    We review de novo the district court's denial of a Rule
    29 motion for judgment of acquittal.              Trinidad-Acosta, 773 F.3d at
    310.   In so doing, we view the evidence in the light most favorable
    to   the   jury's     verdict,      giving   "equal    weight    to   direct   and
    circumstantial evidence."           United States v. Appolon, 
    715 F.3d 362
    ,
    367 (1st Cir. 2013).          We evaluate the sum of all the evidence and
    inferences drawn therefrom, and determine whether that sum is
    enough for any reasonable jury to find all the elements of the
    crime proven beyond a reasonable doubt. United States v. Shaw, 
    670 F.3d 360
    , 362 (1st Cir. 2012) ("Individual pieces of evidence
    viewed in isolation may be insufficient in themselves to prove a
    point, but in cumulation may indeed meet the mark.").                 Also, "[w]e
    do not assess the credibility of a witness, as that is a role
    reserved   for      the   jury.      Nor   need   we   be   convinced   that   the
    government        succeeded    in    eliminating       every    possible   theory
    consistent with the defendant's innocence."                 Trinidad–Acosta, 773
    F.3d at 310–11 (quoting United States v. Troy, 
    583 F.3d 20
    , 24 (1st
    Cir. 2009)).       We will uphold the verdict unless the evidence is so
    scant that a rational factfinder could not conclude that the
    government proved all the essential elements of the charged crime
    beyond a reasonable doubt.          United States v. Azubike, 
    564 F.3d 59
    ,
    -16-
    64   (1st    Cir.   2009).   Accordingly,   "defendants   challenging
    convictions for insufficiency of evidence face an uphill battle on
    appeal."    United States v. Lipscomb, 
    539 F.3d 32
    , 40 (1st Cir.
    2008) (alterations omitted) (quoting United States v. O'Shea, 
    426 F.3d 475
    , 479 (1st Cir. 2005).
    To sustain a drug-conspiracy conviction, the government
    must prove beyond a reasonable doubt that the defendant "knew about
    and voluntarily participated in the conspiracy, 'intending to
    commit the underlying substantive offense.'"       United States v.
    Acosta–Colón, 
    741 F.3d 179
    , 190 (1st Cir. 2013) (quoting United
    States v. Ortiz de Jesús, 
    230 F.3d 1
    , 5 (1st Cir. 2000)). "An
    agreement to join a conspiracy may be express or tacit, and may be
    proved by direct or circumstantial evidence." Trinidad–Acosta, 773
    F.3d at 311 (quoting United States v. Liriano, 
    761 F.3d 131
    , 135
    (1st Cir. 2014)).
    Appellants are right that their "'mere presence' at the
    scene of criminal activity is not enough" to convict them.       See
    United States v. Guerrero, 
    114 F.3d 332
    , 342 (1st Cir. 1997).
    However, they grossly underestimate the strong circumstantial
    evidence supporting the jury's conclusion of guilt.
    The evidence presented at trial, viewed in the light most
    favorable to the jury's verdict, showed that Appellants, along with
    two co-defendants, traveled from the Dominican Republic to the
    coast of Dorado, Puerto Rico, on a twenty-to-twenty-five-foot
    -17-
    wooden yola, which was painted blue both on the inside and outside
    to blend in with the water, had no navigation lights, and was
    riding "very low" in the water.       Its lack of lights, low profile,
    color, and material made it very hard to be seen or be picked up on
    radar. It also had excessive horsepower and fuel for its size, and
    did not have any fishing or recreational gear on board.            Instead,
    it carried six "block shape[d]" gym bags wrapped in duck tape,
    containing more than $3 million worth of heroin and cocaine. These
    bags were in plain view of everyone on board the yola.
    Once the individuals on board the yola detected that they
    had   been    spotted   by   law   enforcement,   they   started     moving
    "erratically" on the boat, and "multiple crew members" started
    throwing the six bags, as well as small backpacks and objects that
    looked like cell phones and GPS units, into the water.             The six
    bags were so large and heavy that more than one individual was
    needed to lift and throw each one overboard.              Two different
    witnesses identified all four Appellants in open court as four of
    the six individuals on board the intercepted yola.        There was also
    testimony that, when initially intercepted by law enforcement,
    Appellants first hesitated to comply with the officers' orders to
    stay put and raise their hands.
    Furthermore, the jury also heard testimony from expert
    witness Agent Conchin about the way drugs are usually packaged (in
    "same size bricks"), the type of vessels used to transport drugs,
    -18-
    and the roles of people involved in the maritime transportation of
    narcotics.
    This evidence, which included lay and expert witness
    testimony,    a   video,5   and   multiple   photos,6   coupled   with   the
    inferences that may be drawn therefrom, was enough for a reasonable
    jury to conclude beyond a reasonable doubt that Appellants were
    guilty of the conspiracy charges against them.          Our conclusion is
    consistent with our precedent.        For example, in United States v.
    Cuevas-Esquivel, 
    905 F.2d 510
     (1st Cir. 1990), the defendants, who
    were apprehended on a thirty-to-forty-foot boat surrounded by
    floating bales of marihuana, raised arguments similar to those
    pressed by Appellants here.       In rejecting their argument of "mere
    presence," this court held that
    [r]ationality support[ed] the jury's finding.
    The jury could without undue strain conclude
    that it was simply incredible that with only
    four persons on board a relatively small
    vessel, on its way to "nowhere," with an open
    cargo hold, surrounded by a sea of floating
    marihuana bales which some of the crew had
    been seen dumping, that all four were not
    participants in this criminal venture. It is
    entirely reasonable for the jury to conclude
    that conspirators, engaged in conduct which by
    its nature is kept secret from outsiders,
    5
    On the video, the jury could see individuals on board the yola
    tossing bags overboard and law enforcement recovering them from the
    water, as well as the individuals' erratic movements when they were
    first detected by law enforcement and their hesitance to comply
    with the order to raise their hands.
    6
    There were photos of the yola and the bags and drugs recovered
    from the water.
    -19-
    would not allow the presence of innocent
    bystanders. Neither juries nor judges are
    required to divorce themselves of common
    sense, where, as here, the appellant's
    portrayal of himself as an innocent bystander
    is inherently unbelievable.
    
    Id. at 515
     (internal quotation marks and citation omitted) (quoting
    United States v. Smith, 
    680 F.2d 255
    , 260 (1st Cir. 1982)); see
    also United States v. Rosa-Cariño, 
    615 F.3d 75
    , 81 (1st Cir. 2010)
    (noting that "[d]rug smugglers handling                 . . . valuable drugs are
    unlikely to involve unknowledgeable outsiders"); Guerrero, 
    114 F.3d at 342
     (noting that "where the circumstantial evidence permits a
    jury to conclude that activities aboard a vessel concern the
    obvious presence of contraband, the jury reasonably may infer the
    crew's knowing participation in the venture"); United States v.
    Piedrahita-Santiago, 
    931 F.2d 127
    , 130 (1st Cir. 1991) (holding
    where seven crewmembers were on board a "small" forty-foot vessel
    that    "[a]    larger   crew    than    ordinarily      needed   for   navigation
    purposes suggests that the crew was hired for the purpose of
    loading     and     unloading   cargo    rather    than    merely    steering   the
    vessel"); United States v. Luciano-Pacheco, 
    794 F.2d 7
    , 11 (1st
    Cir. 1986) (stating that "given the necessarily close relation of
    crewmembers cramped onto a vessel . . . with marijuana, it is
    entirely reasonable for the jury to conclude that conspirators
    .   .   .   would    reasonably    not    allow    the    presence   of   innocent
    bystanders in their midst while conducting a lengthy, illegal
    operation")       (internal     quotation       marks    and   citation   omitted)
    -20-
    (quoting United States v. Beltrán, 
    761 F.2d 1
    , 6 (1st Cir. 1985);
    Smith, 
    680 F.2d at 259-60
     (1st Cir. 1982) (crewmember's presence on
    a vessel carrying large quantities of marihuana together with
    reasonable inferences, supported the conviction notwithstanding
    defendant's contention that he was a mere passenger).
    Although Appellants argue that the evidence was also
    consistent with their defense that they were on the vessel taking
    a ride to Puerto Rico with the sole intention of illegally entering
    the United States, it was up to the jury to believe or disbelieve
    their defense.      The jury did not believe it and we cannot second-
    guess that determination. See Trinidad-Acosta, 773 F.3d at 310-11.
    "Nor   need    we   be    convinced   that   the   government   succeeded   in
    eliminating every possible theory consistent with the defendant's
    innocence."7     Id. at 311 (quoting Troy, 
    583 F.3d at 24
    ).        Thus, the
    district court properly denied Appellants' motions for judgment of
    acquittal.
    C.   Government's Statements
    According    to   Appellants,    the   prosecutor   made   some
    improper remarks during trial that deprived them of a fair trial.
    7
    Although we have held that where the evidence is equally or
    nearly equally consistent with innocence as it is with guilt, "a
    reasonable jury must necessarily entertain a reasonable doubt,"
    O'Laughlin v. O'Brien, 
    568 F.3d 287
    , 301 (1st Cir. 2009) (quoting
    United States v. Flores-Rivera, 
    56 F.3d 319
    , 323 (1st Cir. 1995)),
    that is not the case here, where the evidence establishing guilt
    was very strong.
    -21-
    Some of these remarks were objected to by some appellants at trial,
    while others were not.        We discuss each in turn.
    This court reviews de novo whether objected-to remarks by
    the prosecution were improper and/or constituted misconduct.             See
    United States v. Sepúlveda-Hernández, 
    752 F.3d 22
    , 31 (1st Cir.
    2014);    United States v. Appolon, 
    695 F.3d 44
    , 66 (1st Cir. 2012).
    If   we   conclude   that    statements    were   improper   or   constituted
    misconduct, we must then determine whether such statements resulted
    in prejudice to the Appellants.           United States v. Rodríguez, 
    675 F.3d 48
    , 62 (1st Cir. 2012); United States v. Azubike, 
    504 F.3d 30
    ,
    38-39 (1st Cir. 2007); United States v. Joyner, 
    191 F.3d 47
    , 53
    (1st Cir. 1999) ("[W]e review for harmless error, that is, whether
    the argument was 'sufficiently prejudicial to warrant a new trial
    under the circumstances'" (quoting United States v. Rosales, 
    19 F.3d 763
    , 767 (1st Cir. 1994))).             In determining whether the
    prosecutor's remarks were harmless, "we evaluate the . . . comments
    as a whole, not in isolation," Joyner, 
    191 F.3d at 53
     (quoting
    Rosales, 
    19 F.3d at 767
    ), and "we focus on (1) the severity of the
    misconduct, including whether it was isolated and/or deliberate;
    (2) whether curative instructions were given; and (3) the strength
    of the evidence against the [Appellants]."               United States v.
    González-Pérez, 
    778 F.3d 3
    , 19 (1st Cir. 2015) (citing Rodríguez,
    
    675 F.3d at 62
    ).            The prosecutor's improper statements "are
    considered harmful if they 'so poisoned the well that the trial's
    -22-
    outcome was likely affected, thus warranting a new trial.'"             
    Id.
    (quoting Rodríguez, 
    675 F.3d at 62
    ).
    Any unpreserved claims of prosecutorial misconduct are
    reviewed   for   plain   error.   Id.;   Rodríguez,   
    675 F.3d at 64
    (requiring defendant to prove there was an error, which was clear
    or obvious, that affected his substantial rights, and seriously
    impaired the fairness, integrity, or public reputation of the
    judicial proceedings).
    1.    Opening Statement
    During her opening statement, the prosecutor stated:
    You'll hear the Judge inform you that
    jurisdictional aspects is not an issue for you
    to determine. It's already been determined by
    this Court that the United States had
    jurisdiction over this vessel and that these
    individuals were on board this vessel which we
    had jurisdiction over with the intent and
    knowledge to possess and distribute the
    narcotics.
    Now, in this case there are no --
    Peña-Santo's defense counsel immediately objected to the statement
    saying, "I object to that, Your Honor.      That's not what the Court
    determined.      That they knew that there were drugs on board is
    something for the jury.     That's an issue of fact for the jury to
    decide."   Gil-Martínez's counsel joined his objection and added
    that the district court's "ruling was regarding the jurisdiction,
    not that there were drugs inside the vessel."         Faced with these
    objections, the prosecutor responded, "I don't believe I stated
    -23-
    that.     You will have to determine whether those drugs were on
    board, and you'll see the video of them throwing them overboard."
    Because only Peña-Santo and Gil-Martínez preserved this
    argument, our review of their claim is for harmlessness. While our
    review of Vicente-Arias and Liriano's claim would ordinarily be for
    plain error, because Appellants' claim fails under both standards
    of review, we limit our discussion to the more defendant-friendly
    standard.
    The prosecutor's statement gave the impression that the
    court had already determined that Appellants had the "intent and
    knowledge to possess and distribute the narcotics," which was not
    correct and, thus, was improper.              However, we still need to
    determine whether the statement was prejudicial.
    A   review   of    the   record   does    not   reveal   that   the
    prosecutor intended to mislead the jury.            Rather, it suggests that
    she simply misspoke when trying to list a series of issues the
    government wanted to address as an introduction to the government's
    case.     Furthermore,     the    prosecutor's      improper   statement    was
    isolated and not deliberate.         See González-Pérez, 778 F.3d at 19.
    Defense    counsel   for      Gil-Martínez    and    Peña-Santo   immediately
    objected to the statement and, although the district court made no
    comment or ruling after the objection, the prosecutor immediately
    retracted the statement by saying: "I don't believe I stated that.
    -24-
    You will have to determine whether those drugs were on board, and
    you'll see the video of them throwing them overboard."8
    Also, while the district court did not give a curative
    instruction at the time, we note that one was not requested.
    Moreover, the district court repeatedly instructed the jury that
    attorneys' arguments were not evidence.     During the preliminary
    instructions, the court stated, "[r]emember these are arguments.
    It's what the Government intends to prove in the case.    It's not
    the actual evidence.   The actual evidence will be coming in after
    the witnesses start coming in and presenting exhibits."      Then,
    during the final jury instructions, the district court reiterated
    that it was the government who had to prove intent beyond a
    reasonable doubt.   Specifically, it stated, "[f]or you to find a
    defendant guilty of this crime, you must be convinced that the
    Government has proven each of these things beyond a reasonable
    doubt . . . that the defendants agreed to import cocaine and heroin
    . . . [and] did so knowingly and intentionally."    This militates
    against finding prejudice.   See United States v. Gentles, 
    619 F.3d 8
    We note that the correction itself is problematic because it
    suggested that the video showed the defendants throwing packages
    overboard, whereas it was agreed that the defendants could not be
    identified as doing so from the video.          No contemporaneous
    objection was made, so we review for plain error. As with the
    government's initial statement, the inaccurate reference in the
    correction does not amount to plain error, particularly given the
    admission in the testimony of the government's witness Agent Perry,
    that the defendants could not be identified in the video as
    throwing the packages overboard.
    -25-
    75, 82 (1st Cir. 2010) ("finding no error where defendant failed to
    request a curative instruction and court gave general instructions
    before deliberation as to what the jury could and could not
    consider as evidence" (citing United States v. Robinson, 
    473 F.3d 387
    , 398 (1st Cir. 2007))); see also González-Pérez, 778 F.3d at 21
    ("[W]e ordinarily presume that juries follow instructions.").
    Finally, we find it unlikely that any prejudice surviving
    the instructions could have affected the outcome of the case.    The
    evidence of Appellants' guilt was strong enough to prevent any
    prejudice surviving the instructions from affecting the outcome of
    the case.    In addition, the fact that this statement was made at
    the beginning of the trial also makes it less likely to have
    affected the outcome of the case. See United States v. Mooney, 
    315 F.3d 54
    , 60 (1st Cir. 2002) ("The context of the prosecutor's
    comments also weighs against finding that they likely affected the
    outcome of the trial.       The comments occurred during opening
    arguments, not during summation where the last words the jury hears
    have significant potential to cause prejudice.").    In sum, because
    we do not find that the prosecutor's statement "so poisoned the
    well that the trial's outcome was likely affected," González-Pérez,
    778 F.3d at 19 (quoting Rodríguez, 
    675 F.3d at 62
    ) (internal
    quotation marks omitted), Appellants' claim fails.
    -26-
    2.    Redirect Examination
    On direct examination, Ms. Cacho, the chemist, testified
    about the tests she performed on some of the drugs in order to
    conclude     that    they     were    heroin     and    cocaine.      During
    cross-examination, Gil-Martínez's defense counsel asked Ms. Cacho
    whether she knew if other tests --           such as fingerprint analysis
    and DNA testing -- had been performed on the packages containing
    the drugs.      Defense counsel's point was that no tests linked the
    Appellants to the drugs.       Ms. Cacho testified that she did not do
    anything   other    than    analyze   the    chemical   composition   of   the
    substances.      On redirect examination, the prosecutor asked Ms.
    Cacho, "Did you watch the video of the defendants throwing the
    drugs into the water?" Gil-Martínez's defense counsel objected and
    stated that "[t]hat was not part of the cross-examination."                The
    district court allowed the question, to which Ms. Cacho responded,
    "No."
    Although they did not object at trial to the prosecutor's
    question to Ms. Cacho on redirect examination, Peña-Santo and
    Vicente-Arias now argue that it was a "loaded" and "speaking
    question" that aimed to confuse the jury by making them believe
    that there was direct evidence linking them to the crimes charged.
    They allege that, because there was no direct evidence or witness
    identifying them as throwing anything into the water and no one
    -27-
    could tell from the video whether they were the ones throwing the
    drugs overboard, they are entitled to a new trial.
    Since Peña-Santo and Vicente-Arias failed to object to
    the question at the trial level, our review is only for plain
    error.9   Their claim falls short because, at the very least, they
    failed to establish plain-error review's third and fourth prongs.
    Specifically, Peña-Santo and Vicente-Arias have not shown that
    their substantial rights were affected and that the fairness,
    integrity, or public reputation of their judicial proceedings were
    seriously impaired, especially because Ms. Cacho responded to the
    question in the negative.        Although they argue that the question
    wrongly gave the impression that direct evidence (the video) showed
    them   throwing    the   drugs   overboard,    the    fact   that   Ms.   Cacho
    responded that she had not seen the video -- coupled with the fact
    that the jury examined the evidence (including the video) from
    which the government could lawfully suggest that the jury draw an
    inference   that    Appellants    were   the   ones    throwing     the   drugs
    overboard10 -- sufficiently attenuated any effect that the question
    9
    We note that only Gil-Martínez objected to the prosecutor's
    question at the trial level, but he did so on different grounds --
    that the question went beyond the scope of the cross-examination --
    and neither Peña-Santo nor Vicente-Arias joined his objection.
    10
    The government may suggest to the jury which inferences should
    be drawn from the evidence as long as the government does not know
    that the suggested inferences are false or has very strong reasons
    to doubt those inferences. See United States v. Kasenge, 
    660 F.3d 537
    , 542 (1st Cir. 2011) (stating that "[a]lthough it is the jury's
    job to draw the inferences, there is nothing improper in the
    -28-
    alone could have had.   This is just not the kind of "blockbuster
    error" for which "plain error review tends to afford relief."
    Rodríguez, 
    675 F.3d at 64
    .
    3.   Closing Argument
    Peña-Soto and Vicente-Arias also challenge the following
    statement made by the government during its closing argument:
    "That's not someone's personal drug stash right there.         $3.2
    million is not something that the four of them are going to use
    casually at parties.    Those are drugs that the four of them are
    going to sell at a profit, $3.2 million."     Although they did not
    object to the statement at the trial level, Peña-Santo and Vicente-
    Arias assert that it satisfies the plain error standard of review
    since there was no evidence, either circumstantial or direct, that
    they intended to sell drugs for profit or that they stood to gain
    millions of dollars in profit.       Relying on Arrieta-Agressot v.
    United States, 
    3 F.3d 525
    , 527 (1st Cir. 1993), they claim that the
    challenged statement was inflammatory by referring to money and
    wealth, and that the evidence showed, at most, that they acted as
    couriers (mules) or may have assisted on the boat.    We disagree.
    Although there was no direct evidence that Appellants
    intended to sell the drugs for profit, there is no error -- plain
    Government's suggesting which inferences should be drawn," but
    noting that it is error for the government to propound inferences
    that it knows to be false, or has a very strong reason to doubt)
    (citations omitted).
    -29-
    or otherwise -- in referencing the amount or worth of the drugs and
    inviting the jury to draw the inference that the drugs were not for
    personal use.   See United States v. Bergodere, 
    40 F.3d 512
    , 518
    (1st Cir. 1994) (noting that "we have long recognized that factors
    such as the quantity and purity of the drugs confiscated by the
    authorities can support an inference of intent to distribute"); see
    also United States v. Meadows, 
    571 F.3d 131
    , 144-45 (1st Cir. 2009)
    (At closing argument, the prosecution may "ask jurors to draw
    reasonable inferences from the evidence.").               And, even if the
    Appellants would not be the ones actually to sell the drugs and
    were instead couriers or mules, they were still part of the same
    conspiracy to import and distribute (and eventually sell for
    profit) controlled substances, which were the charged offenses.
    Furthermore,    Peña-Santo's        and      Vicente's       reliance     on
    Arrieta-Agressot   is    misplaced.        The    improper    comments    in
    Arrieta-Agressot   had   to   do   with   the    "evil"   effect   that   the
    defendants' actions had on society.        There, we established that a
    prosecutor's statement is improper if it serves no purpose besides
    inflaming the passions and prejudices of the jury.           
    3 F.3d at 527
    .
    Here, however, the prosecutor's reference to the worth of the drugs
    had the legitimate purpose of both refuting the Appellants' mere
    presence defense and suggesting that the jury draw an inference as
    to the required element of intent.        See Bergodere, 
    40 F.3d at 518
    .
    Thus, their plain error claim fails.
    -30-
    D.    Peña-Santo's Cumulative Error Claim
    Peña-Santo argues that if none of his previous claims of
    error is sufficient to vacate his conviction, their cumulative
    prejudicial effect requires that his conviction be vacated and his
    case remanded for a new trial.
    We    have   acknowledged    that   "[i]ndividual   errors,
    insufficient in themselves to necessitate a new trial, may in the
    aggregate have a more debilitating effect."          United States v.
    Sepúlveda, 
    15 F.3d 1161
    , 1195-96 (1st Cir. 1993).      "[C]laims under
    the cumulative error doctrine are sui generis." 
    Id. at 1196
    . When
    reviewing such a claim a Court must consider:
    each such claim against the background of the
    case as a whole, paying particular weight to
    factors such as the nature and number of []
    errors committed; their interrelationship, if
    any, and combined effect; how the district
    court dealt with the errors as they arose
    (including the efficacy -- or lack of efficacy
    -- of any remedial efforts); and the strength
    of the government's case.
    
    Id.
        In addition, the length of the trial is another factor to be
    considered.      
    Id.
    Here, none of Peña-Santo's alleged errors -- which are
    not many, considering the length of the trial -- resulted in
    substantial prejudice and most of them are entirely without merit.
    Furthermore, as previously explained, the evidence against Peña-
    Santo was very strong, and the district court did not conduct the
    trial in a manner that undermined his right to a fair trial.     Thus,
    -31-
    we reject his contention that his conviction was tainted by
    cumulative error.          See United States v. Flemmi, 
    402 F.3d 79
    , 95
    n.23 (1st Cir. 2005) ("[B]ecause we have found that none of [the
    defendant's]          individual   complaints     resulted     in    substantial
    prejudice and that most are completely without merit, we reject the
    final contention that his conviction was tainted by cumulative
    error." (quoting United States v. DeMasi, 
    40 F.3d 1306
    , 1322 (1st
    Cir. 1994))).         "The Constitution entitles a criminal defendant to
    a fair trial, not to a mistake-free trial."              Sepúlveda, 
    15 F.3d at
    1196 (citing Delaware v. Van Arsdall, 
    475 U.S. 673
    , 681 (1986));
    United States v. Polito, 
    856 F.2d 414
    , 418 (1st Cir. 1988)).
    E.    Gil-Martínez's Sentencing Disparity Claim
    Gil-Martínez claims that he received a disparately higher
    sentence than co-defendant Vicente-Arias, even though there was no
    evidence of dissimilar conduct among them and they both had the
    same Criminal History Category ("CHC").
    1.    Background
    The Presentence Investigation Report ("PSR") recommended
    a Guidelines sentencing range ("GSR") for Gil-Martínez of 235 to
    297   months     of    imprisonment.11      The   PSR   did   not   identify   any
    11
    Pursuant to U.S. Sentencing Guidelines Manual § 3D1.2(d) (2004)
    ("U.S.S.G."), Counts One and Two were grouped together.       These
    offenses resulted in a base offense level of thirty-eight, pursuant
    to U.S.S.G. § 2D1.1. Gil-Martínez had no previous criminal history
    and had a CHC of I. This yielded a GSR of 235 to 297 months of
    imprisonment.
    -32-
    information that would warrant a role adjustment or a departure.
    At the sentencing hearing, the district court considered the PSR's
    recommended GSR and took into account Gil-Martínez's "unfortunate
    rearing and upbringing."       It considered that at times Gil-Martínez
    was unable to eat because his family could not afford food, he
    lived in a wooden house with a dirt floor, and he only had a fourth
    grade education because he left school at a young age to help
    support    his   family.     Gil-Martínez     argued   that     a   within-the-
    Guidelines sentence would be unreasonable when compared to Vicente-
    Arias's sentence of 130 months of imprisonment.              He then requested
    to be sentenced to 120 months of imprisonment, the statutory
    minimum.     He argued that sentencing him to a greater term of
    imprisonment would create a sentencing disparity.
    The district court considered Gil-Martínez's request for
    a sentence similar to that of Vicente-Arias, who received a minor
    role reduction.      The government opposed Gil-Martínez's request for
    a downwardly variant sentence of 120 months, arguing that, while
    Vicente-Arias had received a minor role reduction, Gil-Martínez had
    a number of roles onboard the yola, which distinguished him from
    Vicente-Arias.       The government pointed out that Gil-Martínez had
    admitted to operating and fueling the yola.              The district court
    concluded that it did not have any information that would support
    granting Gil-Martínez a minor role reduction like that Vicente-
    Arias     received   or    otherwise    sentencing     him    to    a   term   of
    -33-
    imprisonment the same as or similar to that of Vicente-Arias.                  The
    court also considered the sentences imposed on other co-defendants.
    It noted that, although Peña-Santo received the statutory minimum
    sentence      of       120   months     of     imprisonment,      Peña-Santo's
    characteristics were different from those of Gil-Martínez because
    Peña-Santo was facing serious health conditions and his life
    expectancy was less than six months. The district court noted that
    although Gil-Martínez compared himself only to Vicente-Arias and
    Peña-Santo,      the     district   court     had   also   sentenced    another
    co-defendant who had pleaded guilty pursuant to a straight plea to
    188 months of imprisonment.           The district court then stated that,
    in sentencing each defendant, it had taken into consideration "the
    particular situation of each and every one defendant" and had
    "individualized sentencing."          After concluding that the court did
    not have any information to support a minor role reduction, and
    that Gil-Martínez was in good health, the district court imposed on
    Gil-Martínez       a   downwardly   variant    sentence    of   192   months    of
    imprisonment.
    2.      Standard / Scope of Review
    We review challenges to the reasonableness of a sentence
    "under a deferential abuse-of-discretion standard." Gall v. United
    States, 
    552 U.S. 38
    , 41 (2007).              We first consider "whether the
    district court made any procedural errors, such as 'failing to
    calculate     (or      improperly   calculating)     the   Guidelines    range,
    -34-
    treating the Guidelines as mandatory, failing to consider the
    section 3553(a) factors, selecting a sentence based on clearly
    erroneous facts, or failing to adequately explain the chosen
    sentence -- including an explanation for any deviation from the
    Guidelines range.'"   United States v. Maisonet-González, 
    785 F.3d 757
    , 762 (1st Cir. 2015) (quoting United States v. Rivera-Moreno,
    
    613 F.3d 1
    , 8 (1st Cir. 2010)).          If the district court has
    committed no procedural error, we then review the substantive
    reasonableness of the sentence imposed for abuse of discretion.
    United States v. Flores-Machicote, 
    706 F.3d 16
    , 20 (1st Cir. 2013).
    "When conducting this review, we take into account the totality of
    the circumstances, including the extent of any variance from the
    Guidelines." Maisonet-González, 785 F.3d at 762 (quoting Trinidad-
    Acosta, 773 F.3d at 309). "A sentence will withstand a substantive
    reasonableness   challenge   so   long   as   there   is   'a   plausible
    sentencing rationale and a defensible result.'"            Id. (quoting
    United States v. Martin, 
    520 F.3d 87
    , 96 (1st Cir. 2008)).
    In fashioning a sentence, judges must consider "the need
    to avoid unwarranted sentencing disparities among defendants with
    similar records who have been found guilty of similar conduct." 
    18 U.S.C. § 3553
    (a)(6). Although this provision is primarily aimed at
    national disparities, rather than those between co-defendants,
    Martin, 
    520 F.3d at 94
    , we have also held that if "'identically
    situated defendants' receive significantly disparate sentences, red
    -35-
    flags may indeed be raised."           United States v. Rivera-López, 
    736 F.3d 633
    , 636 (1st Cir. 2013) (quoting United States v. Mueffelman,
    
    470 F.3d 33
    , 41 (1st Cir. 2006)).
    3.   Analysis
    We   afford     the    district     court       wide   discretion    in
    sentencing    because,      after   the   court       has   calculated     the   GSR,
    "sentencing becomes a judgment call, and a variant sentence may be
    constructed based on a complex of factors whose interplay and
    precise weight cannot even be precisely described."                  United States
    v. Politano, 
    522 F.3d 69
    , 73 (1st Cir. 2008) (quoting Martin, 
    520 F.3d at 92
    ).      Gil-Martínez does not allege that the district court
    failed to consider the 
    18 U.S.C. § 3553
    (a) sentencing factors --
    including the need to avoid sentencing disparities -- or commit any
    other procedural error. Rather, his challenge goes to the weighing
    of the section 3553(a) sentencing factors, specifically the factors
    establishing the need to avoid sentencing disparities and the
    history and characteristics of the defendant.                 As Gil-Martínez was
    sentenced     below   the     applicable       GSR,    his     challenge    to    the
    substantive reasonableness of his sentence faces an uphill battle.
    See United States v. Joubert, 
    778 F.3d 247
    , 256 (1st Cir. 2015)
    ("When, as in this case, a district court essays a substantial
    downward variance from a properly calculated guideline sentencing
    range, a defendant's claim of substantive unreasonableness will
    -36-
    generally fail." (quoting United States v. Floyd, 
    740 F.3d 22
    ,
    39-40 (1st Cir. 2014))).
    As the Government correctly contends, a district court's
    consideration   of   sentencing   disparity   aims   primarily   at    the
    minimization of disparities among defendants nationally and, while
    avoidance of disparities among co-defendants may be considered, "a
    defendant is not entitled to a lighter sentence merely because his
    co-defendants   received   lighter   sentences."     United   States    v.
    Wallace, 
    573 F.3d 82
    , 97 (1st Cir. 2009) (quoting United States v.
    Marceau, 
    554 F.3d 24
    , 33 (1st Cir. 2009)).      Furthermore, contrary
    to Gil-Martínez's claim, he is not entitled to the same sentence as
    Vicente-Arias because they are not "identically situated," inasmuch
    as Vicente-Arias received a minor role reduction12 and Gil-Martínez
    did not.    See Rivera-López, 736 F.3d at 636; United States v.
    Rivera-González, 
    626 F.3d 639
    , 648 (1st Cir. 2010).              At the
    sentencing hearing the district court stated that it would not
    grant Gil-Martínez a minor role reduction because it did not have
    any information supporting a minor role reduction, and, as the
    government argued, the information was to the contrary, with
    Gil-Martínez having admitted to operating and fueling the yola.
    The district court concluded that this information distinguished
    Gil-Martínez's role in the conspiracy from that of Vicente-Arias.
    Gil-Martínez has failed to show that these findings of fact
    12
    This resulted in Vicente-Arias having a lower GSR.
    -37-
    regarding his role in the conspiracy were clearly erroneous.       See
    United States v. Torres-Landrúa, 
    783 F.3d 58
    , 66 n.10 (1st Cir.
    2015).   In addition, although Gil-Martínez selectively compares
    himself only to Vicente-Arias, the record shows that the district
    court did take into consideration the need to avoid sentencing
    disparities not only in relation to Vicente-Arias, but also in
    relation to his other co-defendants.      It is clear from the record
    that the district court also took into consideration that another
    co-defendant, who had pleaded guilty pursuant to a straight plea,
    had received a sentence of 188 months of imprisonment, and that
    Peña-Santo, who was sentenced to the statutory minimum, received
    that sentence because he was sick and his life expectancy was less
    than six months. Because it is evident that the district court did
    consider the need to avoid sentencing disparities among defendants,
    as well as the other sentencing factors, sufficiently explained its
    chosen   sentence,   and     arrived     at    a   defensible   result,
    Maisonet-González, 785 F.3d at 762, Gil-Martínez's challenge to the
    reasonableness of his downwardly variant sentence fails.
    III.   Conclusion
    The record reflects that Appellants were afforded a fair
    trial, that the expert testimony of Agent Conchin was proper, and
    the evidence of their guilt was more than sufficient to support the
    jury's verdicts. In addition, the record shows that Gil-Martínez's
    -38-
    sentence was appropriate.   Thus, Appellants' convictions and Gil-
    Martínez's sentence are affirmed.
    Affirmed.
    -39-