United States v. Shawanna Reeves ( 2014 )


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  •                 Case: 12-13110       Date Filed: 02/06/2014       Page: 1 of 32
    [PUBLISH]
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE ELEVENTH CIRCUIT
    ________________________
    No. 12-13110
    ________________________
    D.C. Docket No. 5:10-cr-00046-MTT-CHW-4
    UNITED STATES OF AMERICA,
    Plaintiff - Appellee,
    versus
    SHAWANNA REEVES,
    a.k.a. Shawanna Halcomb,
    MICHAEL MCSHUN REEVES,
    a.k.a. Docious,
    THORNTON LAMAR MOSS,
    a.k.a. Slim,
    Defendants - Appellants.
    ________________________
    Appeals from the United States District Court
    for the Middle District of Georgia
    ________________________
    (February 6, 2014)
    Before MARCUS and EDMONDSON, Circuit Judges, and VINSON, ∗ District
    Judge.
    ∗
    Honorable C. Roger Vinson, United States District Judge for the Northern District of Florida,
    sitting by designation.
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    MARCUS, Circuit Judge:
    Three co-defendants -- Michael Reeves, his wife Shawanna Reeves
    (“Halcomb-Reeves”),1 and Thornton Moss -- appeal their jury trial convictions for
    conspiracy to distribute cocaine. Both Reeves and Halcomb-Reeves argue that
    there was insufficient evidence to sustain their convictions. Halcomb-Reeves also
    challenges several of the district court’s evidentiary rulings. Specifically, she avers
    that the district court erred in admitting recorded telephone calls and a co-
    conspirator’s statements against her at trial, as well as in denying her motion for a
    mistrial after a government case agent improperly revealed her invocation of the
    right to counsel. Moss asserts that a new trial is warranted because of a series of
    allegedly improper prosecutorial statements during closing argument. Finally,
    Reeves claims that the district court erred in its underlying determination of the
    drug quantity attributable to him at sentencing.
    After thorough review, we affirm each of the defendants’ convictions and
    sentences. We sua sponte remand for the limited purpose of correcting clerical
    errors in Reeves’s written judgment.
    I.
    A.
    1
    For the sake of convenience, we refer to Shawanna Reeves as “Halcomb-Reeves.” The second
    superseding indictment referred to Ms. Reeves as “Shawanna Reeves a/k/a ‘Shawanna
    Halcomb.’”
    2
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    The essential facts are these. During the summer of 2009, Georgia Bureau of
    Investigation officials requested assistance from the Drug Enforcement Agency
    (“DEA”) in the investigation of several individuals responsible for high levels of
    drug distribution in Baldwin County, Georgia. Federal authorities subsequently
    obtained a court-ordered wiretap, which led to the identification of numerous
    conspirators involved in a large-scale cocaine distribution network. A heavy
    volume of intercepted telephone calls revealed a substantial flow of narcotics from
    a Mexican supplier, Santana Romero-Diaz, to Deldrick Jackson of Atlanta. Using
    couriers, such as Danielle Finney, to transport the cocaine from Tucker, Georgia to
    Macon, Georgia, Jackson sold multi-kilogram quantities of cocaine to Reeves over
    an extended time frame running from 2007 to 2010. In turn, Reeves sold smaller
    amounts of the cocaine to lower-level distributors Joshua Smith, Moss, Leroy Hill,
    Sr. (“Hill Sr.”), Eric Marshall, and Adrian Williams throughout this time frame.
    These distributors supplied cocaine to low-level dealers, including Tommy Hill, III
    (“Hill III”), Dara Marcus, and Charlie Seabrooks.
    Between December 15, 2009 and May 5, 2010, DEA agents used video
    surveillance and court-ordered wiretaps to determine that Reeves was distributing
    as much as one-quarter kilogram of cocaine and multiple ounces of crack cocaine
    on a weekly basis to various “customers” in and around Macon. Law enforcement
    agents also learned that he used four different telephone lines, and the recorded
    3
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    parties (including Reeves, Hill Sr., Smith, Moss, Marshall, and Jackson) were
    heard frequently discussing drug quantities and quality. In addition to the calls
    between the drug distributors, the agents intercepted seven revealing calls between
    Reeves and his wife, “Halcomb-Reeves.”
    The investigation culminated in a series of “pick-offs,” or seizures of drugs
    and cash, just after drug transactions had taken place. Thus, for example, on May
    5, 2010, authorities conducted a “pick-off” following Moss’s purchase of cocaine
    from Reeves. Officers found 125 grams of cocaine in Moss’s vehicle and large
    amounts of cash in Reeves’s. The same day, the DEA and other state law
    enforcement officials executed a search warrant at 646 Mill Run Court in Macon, a
    home purchased by Halcomb-Reeves and her grandmother where Halcomb-
    Reeves, Reeves, and their son resided. The officers discovered 512.8 grams of
    cocaine, 23.6 grams of cocaine base, and drug paraphernalia -- including Pyrex
    beakers, electronic scales, and plastic bags -- concealed in a closet in the basement.
    They also seized 186.2 grams of cocaine, a .40 caliber Glock pistol, a Glock pistol
    box containing ammunition, and a box for a Browning nine-millimeter handgun
    from the master bedroom.
    The cocaine, Glock box, and Browning box were found in a closet in the
    master bedroom, and the Glock pistol was found on a bedroom nightstand. The
    serial number on the Browning box matched the number on a handgun that law
    4
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    enforcement agents had confiscated from Jackson, a co-conspirator, two years
    earlier. The agents also retrieved two boxes of ammunition from a kitchen drawer
    in the home. At the time of Reeves’s and Halcomb-Reeves’s arrests on August 30,
    2010, they discovered another .40 caliber Glock handgun in the Halcomb-Reeves
    residence atop the microwave oven in the kitchen; and a magazine to the gun,
    Reeves’s sunglasses, and Halcomb-Reeves’s key chain were found next to the
    weapon. Halcomb-Reeves had purchased the Glock firearms for Reeves since he
    was prohibited from doing so as a convicted felon.
    B.
    On October 28, 2010, a federal grand jury in the Middle District of Georgia
    returned a thirteen-count second superseding indictment charging eleven co-
    defendants (including Reeves, Halcomb-Reeves, and Moss) with multiple narcotics
    and firearms offenses, as well as conspiracy to distribute cocaine from December
    1, 2006 to May 5, 2010. Specifically, the indictment charged Reeves with: (1)
    conspiracy to possess with intent to distribute more than five kilograms of cocaine,
    in violation of 21 U.S.C. §§ 841(a)(1), 841(b)(1)(A)(ii), and 846, and 18 U.S.C. § 2
    (Count One); (2) possession with intent to distribute more than 50 grams of crack
    cocaine, in violation of 21 U.S.C. §§ 841(a)(1), 841(b)(1)(A)(iii), and 846, and 18
    U.S.C. § 2 (Count Two) 2; (3) possession with intent to distribute more than 500
    2
    Count Two was titled as a second conspiracy offense, but actually charged a substantive
    5
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    grams of cocaine, in violation of 21 U.S.C. § 841(a)(1) and (b)(1)(B)(ii), and 18
    U.S.C. § 2 (Count Five); and (4) two counts of possession of a firearm by a
    convicted felon, in violation of 18 U.S.C. §§ 922(g)(1) and 924(a)(2) (Counts
    Seven and Thirteen). Halcomb-Reeves was also charged in Counts One, Two, and
    Five. 3 Finally, the indictment charged Moss with the conspiracy alleged in Count
    One, as well as with possession with intent to distribute cocaine, in violation of 21
    U.S.C. § 841(a)(1) and (b)(1)(C) and 18 U.S.C. § 2 (Count Four). 4
    Four of the co-defendants -- Romero-Diaz, Finney, Smith, and Seabrooks --
    pled guilty. Six proceeded to trial, including Reeves, Halcomb-Reeves, and Moss.
    Co-conspirator Eric Marshall’s case was severed from the co-defendants’ trial.
    Over the course of the nine-day trial, the government presented extensive evidence
    of the cocaine conspiracy. The law enforcement officials who conducted the
    investigation, including DEA Agent Helen Graziadei, provided damning
    testimony. Several cooperating co-conspirators, including Romero-Diaz, Jackson,
    and Smith, also took the stand, describing the nature and extent of the narcotics
    offense. This error was acknowledged at trial, and the jury verdict form provided for the correct
    offense.
    3
    Reeves and Halcomb-Reeves were charged in Count Six with possession with intent to
    distribute more than five grams of crack cocaine, in violation of 21 U.S.C. § 841(a)(1) and
    (b)(1)(B)(iii), and 18 U.S.C. § 2. However, the government dismissed Count Six before closing
    argument.
    4
    Moss was also charged in Count Two of the indictment, but the government dismissed this
    count against Moss prior to trial.
    6
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    conspiracy. Moreover, the government played several incriminating telephone call
    recordings between members of the conspiracy -- including exchanges between
    Reeves and Moss, as well as between Reeves and Halcomb-Reeves -- and showed
    accompanying video surveillance of the drug transactions, as well as photographs
    of the seized cocaine and firearms taken from the Halcomb-Reeves residence. At
    the close of the government’s case, all six defendants unsuccessfully moved for a
    judgment of acquittal under Federal Rule of Criminal Procedure 29.
    In her defense, Halcomb-Reeves elected to take the stand and testified
    extensively, denying her knowledge of and participation in the conspiracy.
    The jury convicted Reeves and Moss on all indicted counts. It found
    Halcomb-Reeves guilty of the conspiracy count but not guilty of the other charges.
    Following the jury’s verdicts, each of the defendants renewed their motions for
    judgment of acquittal under Rule 29, which the district court again denied. The
    trial court subsequently sentenced Reeves to 360 months of imprisonment on
    Counts One and Five, 240 months on Count Two, 120 months on Count Seven,
    and 120 months on Count Thirteen, all to run concurrently. It also placed Reeves
    on supervised release for a term of five years following release from imprisonment,
    and imposed a $500 mandatory assessment fee. The court sentenced Halcomb-
    Reeves to 80 months of imprisonment, followed by three years of supervised
    release, and a $100 mandatory assessment fee. Lastly, it sentenced Moss to 87
    7
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    months of imprisonment, followed by three years of supervised release, and a $200
    mandatory assessment fee. Reeves, Halcomb-Reeves, and Moss each filed timely
    notices of appeal.
    II.
    A.
    First, both Reeves and Halcomb-Reeves claim that the evidence was
    insufficient to sustain their conspiracy convictions. We review de novo a challenge
    to the denial of a Rule 29 motion for a judgment of acquittal based on sufficiency
    of the evidence grounds. United States v. Capers, 
    708 F.3d 1286
    , 1296 (11th Cir.
    2013). We also view the evidence in a light most favorable to the jury verdict and
    draw all inferences in its favor. 
    Id. Thus, we
    are obliged to affirm the convictions if
    a reasonable jury could have found the defendant guilty beyond a reasonable
    doubt. 
    Id. at 1297.
    To sustain a conviction for conspiracy to distribute drugs in violation of 21
    U.S.C. § 846, “the government must prove that 1) an agreement existed between
    two or more people to distribute the drugs; 2) that the defendant at issue knew of
    the conspiratorial goal; and 3) that he knowingly joined or participated in the
    illegal venture.” United States v. Brown, 
    587 F.3d 1082
    , 1089 (11th Cir. 2009)
    (quoting United States v. Matthews, 
    168 F.3d 1234
    , 1245 (11th Cir. 1999)). In
    assessing whether the record is sufficient to demonstrate the existence of a single
    8
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    conspiracy, we consider whether a common goal existed, the nature of the
    underlying scheme, and the overlap of participants. United States v. Richardson,
    
    532 F.3d 1279
    , 1284 (11th Cir. 2008).
    It is by now axiomatic that “[p]articipation in a criminal conspiracy need not
    be proved by direct evidence; a common purpose or plan may be inferred from a
    development and collocation of circumstances.” Glasser v. United States, 
    315 U.S. 60
    , 80 (1942) (internal quotation marks omitted); see United States v. Toler, 
    144 F.3d 1423
    , 1426 (11th Cir. 1998). It is also well established in this Circuit that
    where there are repeated transactions between participants buying and selling large
    quantities of illegal drugs, that may be sufficient to find the participants were
    involved in a single conspiracy to distribute those drugs. 
    Brown, 587 F.3d at 1089
    .
    Moreover, a defendant may be found guilty of participating in a conspiracy if the
    evidence demonstrates that he was aware of its essential nature, “even if he did not
    know all its details or played only a minor role in the overall scheme.” United
    States v. McNair, 
    605 F.3d 1152
    , 1195-96 (11th Cir. 2010) (quoting United States
    v. Guerra, 
    293 F.3d 1279
    , 1285 (11th Cir. 2002)); see also 
    Toler, 144 F.3d at 1428
    (noting that, once a drug conspiracy has been shown to exist, “a defendant can be
    convicted even if his or her participation in the scheme is ‘slight’ by comparison to
    the actions of other co-conspirators”). The government need not prove that a
    defendant participated in every stage of the conspiracy or had direct contact with
    9
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    each of the other alleged co-conspirators. 
    McNair, 605 F.3d at 1196
    ; see United
    States v. Pacchioli, 
    718 F.3d 1294
    , 1303 (11th Cir. 2013).
    B.
    Despite Reeves’s claim, there was an abundance of evidence from which a
    trier of fact could find him guilty of the charged conspiracy. Among the most
    damning pieces of evidence were recorded telephone conversations in which
    Reeves arranged his drug deals, as well as the testimony from five cooperating co-
    conspirators -- Romero-Diaz, Jackson, Seabrooks, Finney, and Smith -- describing
    Reeves’s essential involvement in the illegal venture. Moreover, law enforcement
    agents testified about their search of Halcomb-Reeves’s home, which yielded large
    amounts of cocaine and firearms near Reeves’s possessions. Thus, taking the
    evidence in a light most favorable to the government and resolving all credibility
    determinations in favor of the jury’s verdict, each element of the conspiracy was
    established: (1) an agreement among Reeves and Jackson, Finney, Smith, and
    Moss to distribute cocaine; (2) Reeves’s knowledge of the conspiratorial goal of
    distributing cocaine; and (3) Reeves’s extensive, knowing, and voluntary
    participation in the unlawful undertaking. See 
    Capers, 708 F.3d at 1299
    ; 
    Brown, 587 F.3d at 1089
    .
    Reeves’s primary argument seems to be that he and the charged co-
    conspirators had not entered into a single criminal agreement, but rather separately
    10
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    bought and sold cocaine in the ordinary course of several discrete agreements. But
    the regularity of Reeves’s kilogram-quantity purchases of cocaine from Jackson, as
    well as his repeated cocaine sales to the same street-level distributors, provided
    more than an adequate foundation for the jury to find, as it did, a single
    overarching conspiracy to possess with intent to distribute cocaine. 5 Thus, for
    example, Jackson testified that, from 2007 to May 2010, he or Finney, the courier,
    would bring Reeves multiple kilograms of cocaine once or twice a week. And
    Smith testified that he bought the following quantities from Reeves: (1) in 2007,
    about 2.25 ounces of cocaine once a week; (2) towards the end of 2007, about 4.5
    ounces of cocaine once a week; (3) in 2008, 9 ounces of cocaine a week; and (4) in
    2009, about half a kilogram of cocaine every 10 to 14 days. Indeed, in the case of a
    purchaser of narcotics, an “agreement may be inferred when the evidence shows a
    continuing relationship that results in the repeated transfer of illegal drugs to the
    purchaser.” United States v. Mercer, 
    165 F.3d 1331
    , 1335 (11th Cir. 1999). Based
    on extensive evidence of Reeves’s long-term relationships with multiple co-
    conspirators and his repeated cocaine transfers, the jury could reasonably find that
    Reeves and the others had entered into a joint agreement. See 
    Capers, 708 F.3d at 5
      The defendants asked for and the judge gave a multiple conspiracy charge to the jury,
    instructing the jurors that proof of several distinct conspiracies is not proof of the single
    conspiracy charged in the indictment, unless one of the several conspiracies is the conspiracy
    charged in the indictment. Moreover, the judge instructed the jurors that for them to find a
    defendant guilty of the conspiracy offense, they must decide that the charged conspiracy actually
    existed between two or more conspirators, and that the charged defendant was a member of the
    charged conspiracy, and not some other conspiracy.
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    1299-300. Moreover, having heard him on multiple calls, a rational trier of fact
    could readily conclude that Reeves’s participation was knowing and voluntary.
    Relying heavily on United States v. Glinton, 
    154 F.3d 1245
    (11th Cir. 1998),
    however, Reeves claims that there was neither a common goal nor an overlap of
    participants sufficient to rise to the level of a single conspiracy. But unlike in
    Glinton, where the only thing each defendant shared was their supplier, the
    evidence here, taken in a light most favorable to the jury verdict, established that
    the co-conspirators were interdependent. See 
    id. at 1251.
    Each participant played a
    distinct role in the charged scheme, including (1) Romero-Diaz, who supplied
    cocaine to Jackson; (2) Jackson, who, in turn, supplied large quantities of cocaine
    to Reeves over several years; (3) Reeves, who distributed cocaine to several mid-
    level distributors, including Hill Sr. and Smith; (4) Finney, who delivered cocaine
    to Reeves for Jackson; and (5) Hill Sr. and Smith, who supplied cocaine to lower-
    level distributors, such as Hill III, Marcus, and Seabrooks. From the extensive and
    complex pattern of facts adduced at trial, the jury was free to conclude (as it
    plainly did) that the co-conspirators all shared a common objective. In a typical
    drug distribution scenario like this one, “involving a large-volume seller, several
    mid-level distributors, and multiple street-level dealers, . . . all share the common
    goal of maximizing the cash returns of the business through the distribution of the
    drugs.” United States v. Dekle, 
    165 F.3d 826
    , 829 (1999).
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    C.
    Halcomb-Reeves’s sufficiency of the evidence challenge presents a closer
    question. As her attorney pointed out, there was nothing in the record indicating
    that she personally distributed drugs. The jury found her not guilty of the
    substantive drug offenses charged in Counts Two and Five. But the trial evidence
    was nonetheless sufficient to allow the jury to find beyond a reasonable doubt that
    she, too, knowingly and voluntarily participated in the narcotics conspiracy, albeit
    playing a lesser role.
    For one thing, Halcomb-Reeves’s recorded telephone conversations with
    Reeves were particularly damning. On calls from March 2 and March 4, 2010,
    Halcomb-Reeves informed Reeves that there were officers randomly pulling over
    and searching cars on the highway. Video surveillance showed, and the agents’
    testimony confirmed, that Reeves was engaged in drug-related activities on those
    very days. This evidence suggested that Halcomb-Reeves had knowledge of the
    cocaine conspiracy and was attempting to warn Reeves about police activity on the
    highway. Again, on the May 5, 2010 calls played for the jury,6 Reeves told
    6
    Halcomb-Reeves’s claim that the May 5 recordings “cannot be considered to establish
    Appellant’s active participation or membership in the conspiracy” is unpersuasive. “A
    conspiracy is deemed to have continued as long as the purposes of the conspiracy have neither
    been abandoned nor accomplished and the defendant has not made an affirmative showing that
    the conspiracy has terminated. A defendant can overcome this presumption of continued
    participation only by showing that he affirmatively withdrew from the conspiracy or that the
    final act in furtherance of the conspiracy has occurred.” United States v. Harriston, 
    329 F.3d 779
    ,
    783 (11th Cir. 2003) (citation omitted). Here, Halcomb-Reeves has not met this burden. It was
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    Halcomb-Reeves that Moss had been arrested. He later said that he was “so
    nervous” and that he had “that shit in the house,” to which Halcomb-Reeves
    replied, “I know.” In a subsequent call, Reeves instructed Halcomb-Reeves to go
    home and get “that shit out of there.” Halcomb-Reeves asked where it was, and
    after her husband described the location, she responded, “Alright.” Shortly
    thereafter, the two agreed that Halcomb-Reeves should probably not go home at
    all, and Reeves told Halcomb-Reeves that he lived at an address on West Charlton
    Street.
    Based on the telephone conversations, a reasonable jury could find that: (1)
    Halcomb-Reeves knew that Moss had been arrested for cocaine possession; (2)
    there was cocaine hidden in her house; (3) she agreed to go home and dispose of it
    before the police arrived; (4) she decided not to go home for fear of being arrested;
    and (5) she knew that Reeves was trying to get her to falsely tell the police he lived
    at a different address.7 Indeed, efforts to conceal a conspiracy may support the
    inference that a defendant knew of the conspiracy and joined it while it was in
    operation. See United States v. Gold, 
    743 F.2d 800
    , 825 (11th Cir. 1984).
    only on the second to last call on May 5 that Reeves announced that he had been pulled over by
    the officers and was told to wait. He informed Halcomb-Reeves that the officers were probably
    about to let him go, suggesting that he did not consider himself to be under arrest. But even if
    Reeves had been arrested, an arrest of a co-conspirator does not necessarily end the conspiracy.
    See United States v. Richardson, 
    532 F.3d 1279
    , 1285-86 (11th Cir. 2008).
    7
    Halcomb-Reeves herself admitted on the witness stand that she lied to Agent Lisa Gigante
    about Reeves’s real address.
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    In addition to the telephone conversations, co-conspirator Jackson offered
    testimony revealing that Halcomb-Reeves knew about the narcotics in her house.
    Jackson testified that Reeves, in the presence of Halcomb-Reeves, told him that
    four kilograms of cocaine had been robbed from the home, and, as a result, Jackson
    gave them a Browning nine-millimeter gun for their protection. 8
    Moreover, and equally important, Halcomb-Reeves opted to take the stand
    and testify in her defense, flatly contradicting Jackson’s testimony. She admitted
    she bought three guns and knew many of the co-conspirators, including Jackson,
    Marshall, Hill III, Hill Sr., Finney, Moss, and Smith. But she denied knowing that
    Reeves and Jackson were in the drug business, that her house had ever been
    robbed, and that she had ever seen the Browning gun. Halcomb-Reeves also
    offered wholly innocent explanations of her recorded March and May telephone
    conversations with Reeves. But the jury, hearing Halcomb-Reeves’s words and
    seeing her demeanor, was free to discredit her testimony, and, in fact, to believe
    the opposite of what she had said. See United States v. Brown, 
    53 F.3d 312
    , 314
    (11th Cir. 1995). Quite simply, her testimony was substantive evidence the jury
    could fairly consider in reaching a judgment about her knowing participation in the
    charged drug conspiracy.
    8
    This gun was subsequently returned to Jackson and, as previously noted, confiscated by law
    enforcement.
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    Furthermore, a reasonable jury could infer Halcomb-Reeves’s knowing
    participation in the conspiracy from the fact that she had been married to one of the
    conspiracy’s ringleaders since 2009, had lived with him since 2006, and substantial
    quantities of drugs, along with drug paraphernalia and firearms, were found in her
    home. See United States v. Garcia, 
    447 F.3d 1327
    , 1338 (11th Cir. 2006) (noting
    that fact that defendant lived in “house full of drugs” and “was related through his
    common-law marriage” to conspiracy’s ringleader supported defendant’s
    conspiracy conviction). Law enforcement officers Lisa Gigante, Mike Jones, Dell
    Cole, and Brian Hammock testified that cocaine and drug equipment were found in
    areas that were readily visible, including in the master bedroom closet and in a
    closet in the basement. Indeed, they testified they seized plastic bags containing
    over 500 grams of cocaine, Pyrex beakers, electronic scales, and plastic containers
    from the closets. A forensic chemist determined that the seized cocaine weighed
    approximately 722 grams. The seizure of large quantities of cocaine and drug
    paraphernalia from Halcomb-Reeves’s master bedroom and from her basement
    provided an additional foundation on which the jury could find that Halcomb-
    Reeves had knowingly participated in the conspiracy. See United States v. Molina,
    
    443 F.3d 824
    , 829 (11th Cir. 2006). Finally, the government presented financial
    evidence from which the jury could determine that Halcomb-Reeves was relying
    on the proceeds of Reeves’s drug sales to pay her bills, since the record established
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    that Halcomb-Reeves’s monthly bills inexplicably far exceeded her reported
    monthly income. Cf. United States v. Knowles, 
    66 F.3d 1146
    , 1156-57 (11th Cir.
    1995) (noting that “a defendant’s knowing possession of a large sum of money
    may be considered evidence that the defendant knew the object of the
    conspiracy”).
    In short, the corpus of evidence presented against Halcomb-Reeves, while
    nowhere near as overwhelming as the case presented against Reeves, was
    sufficient to sustain a jury verdict.
    III.
    Halcomb-Reeves also challenges several of the district court’s evidentiary
    rulings. We are persuaded by none of them. We review a district court’s decision
    to admit or exclude evidence for abuse of discretion. 
    Capers, 708 F.3d at 1305
    .
    Moreover, “[e]ven where an abuse of discretion is shown, non-constitutional
    evidentiary errors are not grounds for reversal absent a reasonable likelihood that
    the defendant’s substantial rights were affected.” 
    Id. (quoting United
    States v.
    Range, 
    94 F.3d 614
    , 620 (11th Cir. 1996)).
    A.
    Halcomb-Reeves insists that the district court abused its discretion in
    admitting seven recorded telephone calls. Specifically, she claims the calls were
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    improperly authenticated, and the government erred in bolstering the testimony of
    the agent who identified her voice on the recordings.
    In order to introduce a recording at trial, the government must establish that
    it “is an accurate reproduction of relevant sounds previously audited by a witness.”
    United States v. Biggins, 
    551 F.2d 64
    , 66 (5th Cir. 1977).9 Plainly, the government
    carries the burden of proving: (1) the competency of the operator; (2) the fidelity of
    the recording equipment; (3) the absence of material deletions, additions, or
    alterations in the relevant portions of the recording; and (4) the identification of the
    relevant speakers. 
    Id. But even
    if one or more of these requirements has not been
    satisfied, “[i]f there is independent evidence of the accuracy of the tape recordings
    admitted at trial, we shall be extremely reluctant to disturb the trial court’s
    decision” to admit the recording. 
    Id. at 67.
    The district court has “broad discretion
    in determining whether to allow a recording to be played before the jury,” 
    id. at 66,
    and its determination of authenticity should not be disturbed unless “there is no
    competent evidence in the record to support it.” United States v. Munoz, 
    16 F.3d 1116
    , 1120-21 (11th Cir. 1994) (quoting United States v. Caldwell, 
    776 F.2d 989
    ,
    1001 (11th Cir. 1985)) (emphasis added). We add that under the Federal Rules of
    Evidence, “[a]n opinion identifying a person’s voice -- whether heard firsthand or
    9
    In Bonner v. City of Prichard, 
    661 F.2d 1206
    , 1209 (11th Cir.1981) (en banc), this Court
    adopted as binding precedent all decisions of the former Fifth Circuit handed down prior to close
    of business on September 30, 1981.
    18
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    through mechanical or electronic transmission or recording -- based on hearing the
    voice at any time under circumstances that connect it with the alleged speaker” can
    satisfy Rule 901(a). Fed. R. Evid. 901(b)(5); see United States v. Cuesta, 
    597 F.2d 903
    , 915 (5th Cir. 1979).
    Here, the district court did not abuse its considerable discretion in admitting
    the recordings because there was sufficient evidence establishing Halcomb-
    Reeves’s identity. In the first place, the government authenticated the recordings
    through the testimony of Smith, a co-conspirator who identified Halcomb-Reeves’s
    voice, coupled with Halcomb-Reeves’s own admission that she had met Smith
    before.10 It was up to the jury to determine the weight to place on this
    identification. 
    Cuesta, 597 F.2d at 915
    . Moreover, Agent Graziadei’s “opinion
    identifying [Halcomb-Reeves’s] voice” -- based on her experience in the case,
    Smith’s prior identification, and listening to the wiretap recordings -- was
    permissible under Fed. R. Evid. 901(b)(5). But, in any event, Halcomb-Reeves
    herself confirmed that the telephone recordings were actually between Reeves and
    herself when she testified about what she termed wholly innocent conversations.
    Thus, for example, after the March 2, 2010 call was played for the jury during
    Halcomb-Reeves’s direct examination, Halcomb-Reeves’s counsel asked her, “So
    10
    At trial, Halcomb-Reeves acknowledged that she had met Smith at a party, where she was
    introduced to him as “Mike’s wife.”
    19
    Case: 12-13110     Date Filed: 02/06/2014    Page: 20 of 32
    what were you asking Michael about that morning?” Halcomb-Reeves responded,
    “Was Brandon okay.” Counsel then asked, “Why were you calling him to ask him
    about that?” Even if the government had not carried its burden under Biggins --
    and we think it did -- Halcomb-Reeves’s testimony undeniably constituted
    “sufficient independent evidence” of the identification of the speakers on the
    recordings. See United States v. Hughes, 
    658 F.2d 317
    , 323 (5th Cir. Unit B Oct.
    1981).
    Nor are we persuaded by Halcomb-Reeves’s claim that the government
    improperly bolstered the testimony of Agent Graziadei. She says that the
    government’s reference to Graziadei as an expert and the proffered information
    about the agent’s experience -- two days before the government asked the agent to
    identify Halcomb-Reeves’s voice for the jury -- improperly bolstered the voice
    identification testimony. Improper bolstering occurs when the government places
    its prestige behind the witness, or when the government suggests that information
    not presented to the jury actually supports the witness’s credibility. United States
    v. Bernal-Benitez, 
    594 F.3d 1303
    , 1313-14 (11th Cir. 2010). Merely explicating
    Graziadei’s qualifications as an agent and her role in the case is a far cry from
    bolstering. The challenged remarks were not improper.
    B.
    20
    Case: 12-13110     Date Filed: 02/06/2014   Page: 21 of 32
    Halcomb-Reeves also claims that the district court abused its discretion by
    admitting Jackson’s testimony concerning Reeves’s statement about an alleged
    robbery pursuant to Fed. R. Evid. 801(d)(2)(E). Again, we are not persuaded. At
    trial, Jackson, a co-conspirator, testified that, in November 2007, Reeves informed
    him that four kilograms of cocaine had been robbed from the Reeves home, and as
    a result, Jackson loaned Reeves the Browning nine-millimeter gun for his
    protection. Jackson further testified that Halcomb-Reeves was present when
    Reeves told him about the theft.
    Under the Federal Rules of Evidence, statements of co-conspirators made
    during the course of and in furtherance of the conspiracy are not hearsay. Fed. R.
    Evid. 801(d)(2)(E). For a statement to be admissible under Rule 801(d)(2)(E), the
    government must prove by a preponderance of the evidence that: “(1) a conspiracy
    existed; (2) the conspiracy included the declarant and the defendant against whom
    the statement is offered; and (3) the statement was made during the course and in
    furtherance of the conspiracy.” United States v. Magluta, 
    418 F.3d 1166
    , 1177-78
    (11th Cir. 2005) (quoting United States v. Hasner, 
    340 F.3d 1261
    , 1274 (11th Cir.
    2003)). Here, Halcomb-Reeves only challenges the second requirement. But, as
    we’ve already observed, there was sufficient evidence that Halcomb-Reeves knew
    that Reeves was involved in the cocaine business and actively helped him conceal
    his drug activity from the police. The evidence was sufficient to allow the district
    21
    Case: 12-13110    Date Filed: 02/06/2014   Page: 22 of 32
    court to find by a preponderance of the evidence that the charged conspiracy
    included Reeves, Halcomb-Reeves, and Jackson, and that the offending comment
    was made in the course and in furtherance of the conspiracy.
    Halcomb-Reeves claims, however, that she was not a member of the alleged
    conspiracy at the time of the purported conversation between Reeves and Jackson.
    But a co-conspirator’s declaration made in the course and in furtherance of a
    conspiracy is admissible against a co-conspirator, even one who may have joined
    the conspiracy after the statement was made. United States v. Tombrello, 
    666 F.2d 485
    , 491 (11th Cir. 1982). Finally, Halcomb-Reeves says that the proffered
    statement is inadmissible against her because she was not present when the
    discussion between her husband and Jackson took place. The first problem with the
    claim is that Jackson testified that Halcomb-Reeves was present, and the jury was
    free to believe his testimony over hers. Moreover, her presence at the time of the
    statement need not be proven for the evidence to have been admissible. See Fed. R.
    Evid. 801(d)(2)(E); 
    Magluta, 418 F.3d at 1177-78
    . Her presence would only affect
    the weight the jury may afford the evidence.
    C.
    Halcomb-Reeves also claims that Agent Gigante, who questioned her on
    May 6, 2010 after Reeves had been arrested, improperly commented on her right to
    remain silent. At trial, the following offending exchange occurred:
    22
    Case: 12-13110      Date Filed: 02/06/2014     Page: 23 of 32
    Prosecutor: Okay. And what, if anything, did you ask? Or how did the
    interview go? Can you tell us what [Halcomb-Reeves] said?
    Agent Gigante: She said that she had been employed at Central State
    Hospital for three years and that she lives at the 646 Mill Run Court,
    and she had lived there for two years, and she owns the residence. She
    said she was married to Michael Reeves. . . . And she said, I’m not
    lying. He doesn’t live with me. . . . And I said, well, if you’re the only
    adult living in that house, then I guess the cocaine and the gun that we
    found when we did the search warrant must be yours. And at that
    point [Halcomb-Reeves] hesitated for a minute, and she said, well, I
    think I might need to talk to a lawyer and so --.
    Halcomb-Reeves’s Counsel: Objection, Your Honor. May we
    approach?
    The Court: You may.
    The district court subsequently denied Halcomb-Reeves’s motion for a mistrial, but
    offered to give a curative instruction. Halcomb-Reeves’s counsel declined the
    invitation.
    We review for abuse of discretion a refusal to grant a mistrial based on a
    comment regarding a defendant’s right to remain silent. United States v. Chastain,
    
    198 F.3d 1338
    , 1351 (11th Cir. 1999). “A trial judge has discretion to grant a
    mistrial since he . . . is in the best position to evaluate the prejudicial effect of a
    statement or evidence on the jury.” United States v. Delgado, 
    321 F.3d 1338
    , 1346-
    47 (11th Cir. 2003) (internal quotation marks omitted).
    In Doyle v. Ohio, 
    426 U.S. 610
    , 619 (1976), the Supreme Court held that the
    use of a defendant’s silence at the time of his arrest for impeachment purposes
    23
    Case: 12-13110     Date Filed: 02/06/2014    Page: 24 of 32
    violates due process because warnings pursuant to Miranda v. Arizona, 
    384 U.S. 436
    (1966), carry an implicit assurance that silence will carry no penalty. The
    Court later extended this protection to post-Miranda invocations of the right to
    counsel. Wainwright v. Greenfield, 
    474 U.S. 284
    , 295 (1986). “A Doyle violation
    is harmless if the error had no substantial and injurious effect or influence in
    determining the jury’s verdict.” United States v. Miller, 
    255 F.3d 1282
    , 1285 (11th
    Cir. 2001) (internal quotation marks omitted). The error is “especially [harmless
    when] the prosecutor makes no further attempt to ‘highlight’ the defendant’s
    exercise of Miranda rights either in questioning other witnesses or during closing
    argument.” 
    Id. at 1286.
    The government may comment on a defendant’s silence if it occurred before
    the defendant was in custody and given Miranda warnings. United States v. Rivera,
    
    944 F.2d 1563
    , 1568 (11th Cir. 1991); see Jenkins v. Anderson, 
    447 U.S. 231
    , 239-
    40 (1980). Here, Halcomb-Reeves mentioned her need for a lawyer when she was
    participating in a consensual interview at her sister’s home; she was not in custody
    or under arrest at the time. Unsurprisingly, the record is wholly devoid of evidence
    that Halcomb-Reeves had been advised of her Miranda rights at the time she spoke
    with Agent Gigante. But even if Agent Gigante had commented on Halcomb-
    Reeves’s post-Miranda silence, the district court acted well within its discretion in
    denying her a mistrial based on the comment.
    24
    Case: 12-13110      Date Filed: 02/06/2014    Page: 25 of 32
    The sequence of events here -- the prosecutor’s open-ended question, Agent
    Gigante’s brief mention of Halcomb-Reeves’s invocation, and the immediate
    objection -- resembles exchanges in cases where we have found no Fifth
    Amendment violations. See United States v. Baker, 
    432 F.3d 1189
    (11th Cir.
    2005); Chastain, 
    198 F.3d 1338
    . Thus, for example, in Chastain, an officer
    referenced the defendant’s silence in answering an open-ended question by the
    prosecutor about his investigation. 
    Chastain, 198 F.3d at 1351
    . We held that the
    agent did not manifestly intend to comment on the defendant’s exercise of his
    privilege not to testify, and the jury would not necessarily take the agent’s answer
    to be a comment on the defendant’s failure to testify. 
    Id. at 1351-52.
    Here, Agent
    Gigante was generally responding to an open-ended question about her discussion
    with Halcomb-Reeves. Any reference to Halcomb-Reeves’s mention of her right to
    counsel does not appear to have been intended to be a comment on her exercise of
    the right to remain silent. At sidebar, the government itself stated, “[O]f course, I
    didn’t know she was going there. . . . We had talked about it beforehand, but it was
    some time ago that I talked with her about it and so she may have forgotten.”
    As we observed in Baker, a single, inappropriate reference to a defendant’s
    post-arrest silence that is not mentioned again is too brief to constitute a Fifth
    Amendment violation. 
    Baker, 432 F.3d at 1222
    . Like the witness in Baker, Agent
    Gigante only referred to Halcomb-Reeves’s request for a lawyer once, and the
    25
    Case: 12-13110     Date Filed: 02/06/2014     Page: 26 of 32
    government made no further inquiry or argument about the statement. In short,
    even if Gigante actually had referenced Halcomb-Reeves’s post-Miranda silence,
    the inadvertent comment was “harmless” and did not warrant a mistrial.
    Halcomb-Reeves also argues that the cumulative effect of the district court’s
    evidentiary rulings warrants reversal of her conviction. Under the cumulative-error
    doctrine, we will reverse a conviction where an aggregation of non-reversible
    errors yields a denial of the constitutional right to a fair trial. 
    Capers, 708 F.3d at 1299
    . But the district court did not commit any error concerning the recorded
    telephone calls or the admission of Jackson’s testimony. Agent Gigante’s
    testimony about Halcomb-Reeves’s invocation of her right to a lawyer was, at
    worst, and only arguably, a single, harmless error. Plainly, this is insufficient to
    support a cumulative error argument. See United States v. Gamory, 
    635 F.3d 480
    ,
    497 (11th Cir. 2011) (noting that if there are no errors or only a single error, there
    can be no cumulative error).
    IV.
    Finally, Moss appeals his conspiracy conviction claiming that the
    government deliberately and repeatedly misstated facts in its closing argument. To
    find prosecutorial misconduct, a two-element test must be met: “(1) the remarks
    must be improper, and (2) the remarks must prejudicially affect the substantial
    rights of the defendant.” United States v. Gonzalez, 
    122 F.3d 1383
    , 1389 (11th Cir.
    26
    Case: 12-13110     Date Filed: 02/06/2014    Page: 27 of 32
    1997) (quoting United States v. Eyster, 
    948 F.2d 1196
    , 1206 (11th Cir. 1991)). “A
    defendant’s substantial rights are prejudicially affected when a reasonable
    probability arises that, but for the remarks, the outcome of the trial would have
    been different.” United States v. Eckhardt, 
    466 F.3d 938
    , 947 (11th Cir. 2006). We
    generally consider four factors: (1) whether the challenged comments had a
    tendency to mislead the jury or prejudice the defendant; (2) whether the comments
    were isolated or extensive; (3) whether the comments were deliberately or
    accidentally placed before the jury; and (4) the strength of the competent proof
    establishing the guilt of the defendant. United States v. Lopez, 
    590 F.3d 1238
    ,
    1256 (11th Cir. 2009). A prosecutor’s comments in closing statement must be
    viewed in the context of the trial as a whole. United States v. Bailey, 
    123 F.3d 1381
    , 1400 (11th Cir. 1997). The purpose of closing argument is to assist the jury
    in analyzing the evidence, and although a prosecutor may not exceed the evidence
    presented at trial during her closing argument, she may state conclusions drawn
    from the trial evidence. 
    Id. Additionally, “the
    prosecutor, as an advocate, is entitled
    to make a fair response to the arguments of defense counsel.” United States v.
    Sarmiento, 
    744 F.2d 755
    , 765 (11th Cir. 1984) (quotation and alteration omitted).
    Thus, issues raised by a defendant in closing argument are “fair game for the
    prosecution on rebuttal.” 
    Id. 27 Case:
    12-13110     Date Filed: 02/06/2014    Page: 28 of 32
    Having reviewed this record, we can discern no reversible error based on the
    prosecutor’s closing argument. Of the six comments that Moss challenges on
    appeal, three were not improper because the government was merely drawing
    conclusions from the trial evidence. These three remarks included the
    government’s use of a hand-drawn wheel diagram to explain the relationship
    between the defendants, its statement that two of the co-conspirators (Hill Sr. and
    Marcus) had a pre-existing relationship, and its assertion that “seven or eight,” as
    used in a telephone call between Hill Sr. and Reeves, referred to ounces. The other
    three cited errors -- a misstatement that jurors must consider Halcomb-Reeves’s
    testimony in the same way they assess a cooperating co-conspirator’s testimony, an
    incorrect statement that Hill III’s counsel referenced facts not in evidence during
    his closing argument, and an inaccurate attribution of two kilograms of cocaine to
    Moss -- could be deemed improper. But they do not affect Moss’s substantial
    rights because there isn’t a reasonable probability that, but for the remarks, the
    outcome of his trial would have been different. Indeed, the cocaine attribution
    misstatement is the only mistake that even potentially could have implicated Moss.
    And the government quickly corrected the error, clarifying that it was Romero-
    Diaz who had been in possession of two kilograms and properly attributing only
    124 grams of cocaine to Moss.
    28
    Case: 12-13110      Date Filed: 02/06/2014    Page: 29 of 32
    Furthermore, any error in the prosecutor’s comments was harmless because
    the record contains sufficient independent evidence of Moss’s guilt concerning the
    conspiracy charge, including the presentation of several recorded conversations
    between Moss and Reeves discussing cocaine purchases. Moreover, the court
    cured all of the complained-of remarks through its jury instructions. See 
    Lopez, 590 F.3d at 1256
    (finding that if the district court takes a curative measure in
    response to prosecutorial misconduct during closing arguments, a court of appeals
    will reverse only if the evidence is so prejudicial as to be incurable by that
    measure). Moss has not come close to establishing that the closing argument was
    so highly prejudicial as to be incurable by the court’s instructions. The improper
    comments did not prejudicially affect Moss’s substantial rights, and the district
    court did not abuse its discretion by refusing to grant a mistrial.
    V.
    In addition to challenging the sufficiency of the evidence, Reeves contends
    that the district court erred by attributing at least 150 kilograms of cocaine to him
    at sentencing. We review for clear error a district court’s determination of drug
    quantity. United States v. Almedina, 
    686 F.3d 1312
    , 1315 (11th Cir. 2012). The
    government must establish drug quantity by a preponderance of the evidence. 
    Id. When the
    amount of the drugs seized does not reflect the scale of the offense, the
    district court must approximate the drug quantity attributable to the defendant. 
    Id. 29 Case:
    12-13110       Date Filed: 02/06/2014       Page: 30 of 32
    at 1315-16; see United States v. Frazier, 
    89 F.3d 1501
    , 1506 (11th Cir. 1996). In
    estimating the quantity, the trial court may rely on evidence demonstrating the
    average frequency and amount of a defendant’s drug sales over a given period of
    time. 
    Frazier, 89 F.3d at 1506
    . “This determination may be based on fair, accurate,
    and conservative estimates of the drug quantity attributable to a defendant, [but it]
    cannot be based on calculations of drug quantities that are merely speculative.”
    
    Almedina, 686 F.3d at 1316
    (quoting United States v. Zapata, 
    139 F.3d 1355
    , 1359
    (11th Cir. 1998) (per curiam)).
    The foundation for the district court’s calculation of drugs at sentencing was
    neither “vague” nor “uncertain.” See United States v. Simpson, 
    228 F.3d 1294
    ,
    1301 (2000). Jackson testified that he sold Reeves the following specific amounts:
    (1) in 2007, between five to ten kilograms of cocaine a week; (2) in 2008, ten
    kilograms of cocaine a week; (3) in 2009, three kilograms of cocaine twice a week;
    and (4) in 2010, three kilograms of cocaine, once or twice a week. At sentencing,
    the district court analyzed this evidence, observing that although the Presentence
    Investigation Report attributed an approximate minimum of 883 kilograms of
    cocaine to Reeves, “the real relevant issue” was simply whether a preponderance
    of the evidence supported a quantity of more than 150 kilograms. 11 And the court
    found that it did, even accepting that Jackson may have “exaggerated somewhat.”
    11
    Under the Sentencing Guidelines, a defendant’s base offense level is 38 -- the highest level
    30
    Case: 12-13110        Date Filed: 02/06/2014         Page: 31 of 32
    The district court acknowledged that there were arguably inconsistencies in
    Jackson’s account, took them into consideration at the sentencing hearing, and
    discussed Jackson’s trial testimony at length. Having conducted both the trial and
    the sentencing, the district court was in the best position to make credibility
    choices among various pieces of testimony regarding the quantity of drugs
    involved in a conspiracy. See United States v. Alred, 
    144 F.3d 1405
    , 1417 (11th
    Cir. 1998) (finding no clear error when the district court judge relied on a grand
    jury witness’s testimony of quantity over a different witness’s trial testimony of
    quantity). Indeed, where there are two acceptable views of the evidence, the
    factfinder’s choice cannot be clearly erroneous. United States v. Izquierdo, 
    448 F.3d 1269
    , 1278 (11th Cir. 2006). A preponderance of the evidence showed that
    Reeves was responsible for well in excess of 150 kilograms of cocaine, and Reeves
    has failed to demonstrate why “great deference” should not be accorded to this
    factual determination. United States v. Gregg, 
    179 F.3d 1312
    , 1316 (11th Cir.
    1999). 12
    available -- if the offense involves 150 kilograms or more of cocaine. U.S.S.G. § 2D1.1(c)(1).
    12
    Reeves’s written judgment contains several scrivener’s errors. We may sua sponte raise the
    issue of clerical errors in a judgment and remand with instructions that the district court correct
    them. See United States v. Massey, 
    443 F.3d 814
    , 822 (11th Cir. 2006) (remanding with
    directions for the district court to correct the clerical error where the judgment listed the correct
    crime, but incorrectly listed the corresponding indictment count). Count One of the written
    judgment should be corrected to reflect the offense of conspiracy to possess with intent to
    distribute more than five kilograms of cocaine, in violation of 21 U.S.C. § 846 in connection
    31
    Case: 12-13110        Date Filed: 02/06/2014       Page: 32 of 32
    Accordingly, we affirm Reeves’s, Halcomb-Reeves’s, and Moss’s
    convictions and sentences. But we remand for the limited purpose of correcting the
    scrivener’s errors in Reeves’s written judgment.
    AFFIRMED; AND REMANDED IN PART.
    with § 841(a)(1) and (b)(1)(A)(ii), as charged in the second superseding indictment and as found
    by the jury. Count Two of the written judgment should be amended to reflect the offense of
    possession with intent to distribute more than five, but less than 50, grams of crack cocaine, as
    charged in the indictment and as found by the jury, in violation of 21 U.S.C. § 841(a)(1) and (b).
    The correction of these clerical errors “would not prejudice [Reeves] in any reversible way.”
    United States v. Diaz, 
    190 F.3d 1247
    , 1252 (11th Cir. 1999).
    32