United States v. Nikolaos Mamalis ( 2012 )


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  •                                UNPUBLISHED
    UNITED STATES COURT OF APPEALS
    FOR THE FOURTH CIRCUIT
    No. 11-4687
    UNITED STATES OF AMERICA,
    Plaintiff - Appellee,
    v.
    NIKOLAOS MAMALIS,
    Defendant – Appellant,
    and
    BALTIMORE CITY POLICE DEPARTMENT,
    Respondent.
    Appeal from the United States District Court for the District of
    Maryland, at Baltimore.    Benson Everett Legg, District Judge.
    (1:09-cr-00608-BEL-1)
    Argued:   September 19, 2012                 Decided:   November 30, 2012
    Before KEENAN and FLOYD, Circuit Judges, and Timothy M. CAIN,
    United States District Judge for the District of South Carolina,
    sitting by designation.
    Affirmed by unpublished opinion. Judge Cain wrote the opinion,
    in which Judge Keenan and Judge Floyd joined.
    ARGUED: William Lawrence Welch, III, Baltimore, Maryland, for
    Appellant.   Debra Lynn Dwyer, OFFICE OF THE UNITED STATES
    ATTORNEY, Baltimore, Maryland, for Appellee. ON BRIEF: Rod J.
    Rosenstein, United States Attorney, Jeffrey W. Peyton, Law
    Clerk, OFFICE OF THE UNITED STATES ATTORNEY, Baltimore,
    Maryland, for Appellee.
    Unpublished opinions are not binding precedent in this circuit.
    2
    CAIN, District Judge:
    A   jury    convicted        Nikolaos       Mamalis       (Mamalis)        of      various
    federal    offenses       arising     out    of    a     series     of     armed    robberies
    committed between July and November 2009. Mamalis was sentenced
    to a total of seventy-seven years’ imprisonment.                                   On appeal,
    Mamalis    challenges        his     convictions         and    sentences        on      several
    grounds,     including       the     improper       admission        of     evidence,         the
    failure    of    the      district    court       to   instruct       the     jury       on   the
    definition      of   reasonable       doubt,       and    violation         of   the      Double
    Jeopardy Clause.          For the reasons below, we affirm.
    I.
    Between July and November 2009, Mamalis, along with co-
    defendants        Daniel         Chase       (Chase),           Evangelos           Tsoukatos
    (Tsoukatos),           Antowan        Bell        (Bell),           George         Laloudakis
    (Laloudakis), and Pedro Garcia (Garcia), planned and committed
    three armed robberies.             In all three robberies, Mamalis knew the
    victims,     assisted       with     the     planning          of   the     robberies         and
    surveillance         of    the     victims,        and     coordinated             the     other
    defendants’ actions via a cell phone during the robberies.
    First, on July 29, 2009, after planning and coordinating
    via   prepaid     cell      phones,      Mamalis,        Chase,      and    Garcia       robbed
    Precision Vending, a private business in Baltimore, Maryland.
    Mamalis knew the store’s owner and the physical layout of the
    3
    location.        Once the owner was alone in the building, Chase and
    Garcia impersonated delivery men, gained access to the store,
    brandished a firearm, and stole over $10,000.
    Second,     on     September      2,     2009,      Mamalis,        Chase,     and
    Laloudakis robbed the home of the owner of Citizens Pharmacy
    Services,        another     of     Mamalis’s        acquaintances.          Chase     and
    Laloudakis       impersonated       law   enforcement       investigators,         gained
    access to the gated community and then the home, brandished a
    firearm at the owner and his wife, and absconded with jewelry
    and cash.
    Finally,     on    September      29,       2009,   Mamalis,        Laloudakis,
    Tsoukatos, and Chase robbed the home of the owner of Sparrow’s
    Point Restaurant, yet another of Mamalis’s acquaintances.                             This
    time,    Chase     impersonated      an    investigator       with     the    Baltimore
    County    State’s        Attorney    Office,     gained     access     to    the     home,
    brandished a firearm at the owner and restrained him, allowing
    the defendants to steal over $110,000.
    During     the    investigation        of    the    robberies,        five     pen
    register orders were issued between August 31 and November 7,
    2009.     Additionally, a wiretap authorization order was issued on
    November     5,    2009.       Through     the      wiretap    interceptions,          law
    enforcement learned that Mamalis and Chase intended to commit
    another robbery in Atlantic City.
    4
    On November 8, 2009, state and federal investigators began
    surveillance of Mamalis and Bell in Baltimore and followed them
    to   Atlantic      City.        On    November      9,     2009,   Chase     met    up     with
    Mamalis     and    Bell        in    Atlantic       City,    where     law    enforcement
    arrested     the    three       defendants.              Officials    searched       Chase's
    vehicle    in     conjunction         with    his    arrest    and    discovered         mace,
    rope, rubber gloves, handcuffs, empty money bags, a knife, tape,
    and a fake law enforcement identification.
    Pursuant    to     a    search       warrant,       officials       then    searched
    Mamalis's hotel room and recovered a cell phone, hotel receipts,
    a wallet, Bell's driver's permit, a sock containing jewelry, and
    other    items.      Subsequently,            law   enforcement       obtained       another
    search warrant to search Mamalis's residence.                         From this search,
    officials recovered a firearm and a firearm box.
    II.
    Mamalis       filed       several        motions       to      suppress       tangible
    evidence, wiretap evidence, and various statements.                                 After a
    suppression hearing, the district court denied these motions.
    Following      a     jury      trial,    Mamalis      was    convicted       of    three
    counts of Hobbs Act robbery, in violation of 
    18 U.S.C. § 1951
    (2006), one count of conspiracy to commit Hobbs Act robbery, in
    violation of 
    18 U.S.C. § 1951
    , and three counts of using and
    carrying    a     firearm       during       and    in    relation     to    a     crime    of
    5
    violence,     in   violation   of   
    18 U.S.C. § 924
    (c)(2006).      The
    district court sentenced Mamalis to twenty (20) years to run
    concurrently for the conspiracy to commit a Hobbs Act robbery
    (Count One) and the three Hobbs Act robberies (Counts Two, Four,
    and   Six);   seven   (7)   years   to       run   consecutively    for    using   a
    firearm in relation to the conspiracy in Count One and the Hobbs
    Act robbery in Count Two (Count Three); twenty-five (25) years
    to run consecutively for using a firearm in relation to the
    conspiracy in Count One and the Hobbs Act robbery in Count Four
    (Count Five); and twenty-five (25) years to run consecutively
    for using a firearm in relation to the conspiracy in Count One
    and   the     Hobbs   Act   robbery       in       Count    Six   (Count    Seven).
    Accordingly, the district court sentenced Mamalis to a total of
    seventy-seven (77) years.
    III.
    A.
    Mamalis argues that the evidence obtained through use of
    the pen registers was inadmissible because (1) the warrants were
    invalid; and (2) the orders authorized use of the pen registers
    "without geographical limits," in violation of 
    18 U.S.C. § 3123
    .
    We disagree.
    Under federal law, an application for an order authorizing
    the use and installation of a pen register must include the name
    6
    of the attorney making the application, the “identity of the law
    enforcement      agency    conducting       the    investigation,"       and     "a
    certification by the applicant that the information likely to be
    obtained is relevant to an ongoing criminal investigation being
    conducted by that agency.” 
    18 U.S.C. § 3122
    .                Moreover, an order
    authorizing   the   installation      and    use   of   a   pen   register     must
    specify:
    (A) the identity, if known, of the person to whom is
    leased or in whose name is listed the telephone line
    or other facility to which the pen register or trap
    and trace device is to be attached or applied;
    (B) the identity, if known, of the person who is the
    subject of the criminal investigation;
    (C) the attributes of the communications to which the
    order   applies,  including   the   number  or   other
    identifier and, if known, the location of the
    telephone line or other facility to which the pen
    register or trap and trace device is to be attached or
    applied, and, in the case of an order authorizing
    installation and use of a trap and trace device under
    subsection (a)(2), the geographic limits of the order;
    and”.
    (D)   a  statement   of  the   offense to  which  the
    information likely to be obtained by the pen register
    or trap and trace device relates . . .
    
    18 U.S.C. § 3123
    (b)(1).        Maryland law is substantially similar.
    See Md. Code. Ann., Cts. & Jud. Proc. § 10-4B-03 (West 1988).
    1.
    "We   review   the    factual    findings     underlying      a   motion   to
    suppress   for     clear   error     and    the    district       court’s    legal
    determinations de novo."       United States v. Hamlin, 
    319 F.3d 666
    ,
    7
    671 (4th Cir. 2003)(citing United States v. Rusher, 
    966 F.2d 868
    ,    873   (4th    Cir.       1992)).     On    appeal,      we   also     review     the
    evidence in a light most favorable to the government when a
    motion to suppress has been denied.                      
    Id.
     (citing United States
    v. Seidman, 
    156 F.3d 524
    , 547 (4th Cir. 1998)).
    2.
    First, Mamalis argues that the orders authorizing the use
    of pen registers were invalid because the judges' signatures
    were inconsistent and the detectives' signatures were missing
    from the warrant applications.
    The government had initially given Mamalis copies of the
    applications       and     orders     without      the      detectives'      signatures.
    However,      after       Mamalis    moved        to     suppress,     the    government
    delivered copies of the applications and orders displaying both
    the detective and judges' signatures. Mamalis contends that the
    supplemental disclosures raised additional questions about the
    validity      of   the     pen    register       warrants,      because      the   judges’
    signatures in the supplemental discovery appeared different from
    the signatures for the same judges in the original discovery.
    The district court held a two-day suppression hearing.                             At
    the    hearing,    the     two    detectives       who      sought   the   pen     register
    warrants testified as to the usual procedure used in obtaining
    pen register warrants from the Circuit Court of Baltimore City,
    which    included     a    process     designed        to    prevent   copies       of   the
    8
    judges' true signatures from circulating in public.                                 Further,
    the detectives testified that they routinely did not sign the
    applications and orders until they were in the presence of the
    judge     and   only    after       having   been         sworn    in.      The   detectives
    testified that they followed this process every time they sought
    a pen register warrant.
    The district court denied the motion to suppress, finding
    that the detectives’ testimony established that the pen register
    orders     were      signed    by    the   judges         in   their     presence   and    the
    signatures appeared different due to the process designed to
    prevent the circulation of the judges’ true signatures.                             We find
    no   error      in    the     district     court's         denial      of   the   motion    to
    suppress as to this issue. 1
    Mamalis        also     argues     that       the    state    court    pen    register
    orders     were      invalid    because      they         were    "without    geographical
    limits."        However, while four of the pen register court orders
    use the language "without geographical limits," the orders also
    clearly establish that the pen registers are to be "installed
    1
    We also note that there is a letter in the Supplemental
    Joint Appendix from Circuit Court Judge John Addison Howard
    dated the day after the district court filed its order denying
    Mamalis’ motion to suppress in which Judge Howard certifies that
    his signature is on four of the applications and orders. (Supp.
    J.A. 3).
    9
    and used within the jurisdiction of [the state] Court." 2                   We hold
    that this language provides that the geographical limits of the
    pen       registers    were        coterminous      with    the         geographical
    jurisdiction of the issuing state courts, and therefore were not
    without geographical limits.
    Finally, Mamalis contends that the pen register orders were
    invalid because they failed to state who was the subject of the
    investigation.        Section      3123(b)(1)(B)     requires      only    that   the
    subject be stated, if known.                 Four of the five pen register
    orders stated that the subject was unknown and the fifth one
    stated Mamalis was the subject of the investigation.                         In his
    brief, Mamalis states in one sentence that the pen registers
    fail to name the subject of the investigation.                He did not raise
    this issue below, and further he does not provide any argument
    pertaining      to    this     issue    on     appeal.       See        Fed.R.App.P.
    28(a)(9)(A)(“[Appellant's] argument . . . must contain . . .
    appellant's contentions and the reasons for them, with citations
    to    the   authorities      and    parts     of   the   record    on     which   the
    appellant relies.”).          Therefore, we find Mamalis has waived this
    issue on appeal.        Wahi v. Charleston Area Med. Ctr., Inc., 
    562 F.3d 599
    , 607 (4th Cir. 2009)(holding that a single declarative
    2
    The fifth pen register order, issued August 31, 2009, does
    not mention geographical limits.
    10
    sentence, without citations to authorities or the record, is
    insufficient to raise an argument on appeal).
    B.
    Mamalis    then   argues   that     the   district   court   improperly
    admitted evidence obtained through the wiretaps because (1) the
    warrants were not valid under 
    18 U.S.C. § 2518
     and (2) the
    government failed to issue reports to the Administrative Office
    of the United States Courts (AO) in accordance with 
    18 U.S.C. § 2519
    .   We disagree.
    On November 5, 2009, an order authorizing the interception
    of wire and electronic communications on two telephone numbers
    was issued by a judge for the Circuit Court of Baltimore County,
    pursuant   to   an     affidavit   and     application    submitted   by   a
    Baltimore Police detective.         The order required the government
    to file progress reports with the court every seven days, with
    the first report due on November 10, 2009.           Mamalis was arrested
    on November 9, 2009.
    As stated above, we review the "factual findings underlying
    a motion to suppress for clear error and the district court’s
    legal determinations de novo."           Hamlin, 
    319 F.3d at
    671 (citing
    Rusher, 
    966 F.2d at 873
    ).          On appeal, this court also reviews
    the evidence in a light most favorable to the government when a
    motion to suppress has been denied.             
    Id.
     (citing Seidman, 156
    F.3d at 547).
    11
    1.
    Mamalis argues that the wiretaps were invalid because the
    warrants did not comply with 
    18 U.S.C. § 2518
    .                                    Specifically, he
    contends that the warrants failed to comply with § 2518(1)(b)
    and    (c),    as       they    failed          to    set      forth       a    full    and    complete
    statement        regarding            the       facts          and     whether          investigative
    procedures had been tried and failed. 3                              Mamalis also argues that
    the warrant violated § 2518(4)(b) because the November 5, 2009
    wiretap order lists a phone number inconsistent with the phone
    number      listed       in     the       application           and    affidavit.               Finally,
    Mamalis       argues      that        the       warrants        are        invalid       because       the
    government       failed         to     report         its      progress          to    the     judge    as
    required by § 2518(6).
    Pursuant to § 2518(b) and (c), an application for an order
    authorizing         a     wiretap         must        include         “a       full     and     complete
    statement      of       the    facts      and        circumstances             relied   upon     by    the
    applicant,       to      justify          his    belief         that       an     order       should    be
    issued,” and “a full and complete statement as to whether or not
    other investigative procedures have been tried and failed or why
    they reasonably appear to be unlikely to succeed if tried or to
    be    too    dangerous.”             
    18 U.S.C. § 2518
    (b),(c).             Additionally,
    3
    Mamalis mentions that the warrants also violate §
    Although
    2518(1)(e), because he makes no argument in furtherance of that
    contention, that argument is deemed abandoned.
    12
    pursuant to § 2518(4), an order authorizing wiretapping must
    specify     “the      identity        of     the        person,      if    known,       whose
    communications        are     to    be     intercepted”        and    “the      nature      and
    location of the communications facilities as to which, or the
    place where, authority to intercept is granted.”                             
    18 U.S.C. § 2518
     (4)(a),(b).
    2.
    First, Mamalis argues that the information obtained via the
    wiretap was obtained in violation of federal law because the
    application for the wiretap did not include a “full and complete
    statement       of   the    facts    and    circumstances         relied     upon      by   the
    applicant” as required by § 2518(1)(b).                       Specifically, he argues
    that the affiants stated that they did not “include[]details of
    every    aspect      of    this     investigation        to   date."         However,       the
    affiants    also      explicitly         stated    that    ”[f]acts       not    set     forth
    herein are not being relied on in reaching the conclusion that
    orders should be issued."                Therefore, we find that the affidavit
    does not violate § 2518(1)(b) and the district court did not err
    in denying Mamalis’s motion to suppress on this ground.
    Next,    Mamalis     argues      that     the    wiretap     authorization          was
    improper because the applicant failed to include a “full and
    complete statement as to whether or not investigative procedures
    have been tried and failed,” in violation of § 2518(1)(c).                                  He
    argues that the applicant merely “summarize[d] various types of
    13
    investigative       techniques.”   We    find   this    contention     to    be
    without merit.
    Findings of necessity by the issuing court are reviewed for
    abuse of discretion. United States v. Wilson, 
    484 F.3d 267
    , 280
    (4th Cir. 2007).        Furthermore, the burden on the government to
    show that it exhausted other investigative techniques prior to
    applying for wiretap authorization is not great. United States
    v. Smith, 
    31 F.3d 1294
    , 1297 (4th Cir. 1994).                In essence, the
    government must show that wiretapping the phones in conjunction
    with the investigation is reasonable. 
    Id. at 1298
    .
    Here, the affidavit detailed at length the extent to which
    other investigative techniques were tried and failed or were
    unlikely to succeed.       Moreover, the affidavit explained how the
    wiretaps were necessary to gather evidence about Mamalis and his
    cohorts and their operation and to establish their locations.
    Indeed, the government listed no fewer than seventeen separate
    paragraphs in the affidavit justifying the use of wiretaps.                 The
    affidavit clearly demonstrated that the government had exhausted
    other     investigative     techniques   and    that        wiretapping     was
    necessary     and    reasonable.    Accordingly,       we    hold   that    the
    district court did not abuse its discretion in finding that the
    government complied with its burden.
    Mamalis also contends that the November 5, 2009 wiretap
    order warrant violated § 2518(4)(b) because it lists a different
    14
    phone     number     from     the   phone      number     referred       to       in    the
    application      and     affidavit. 4         However,     this      was      merely      a
    typographical error which was corrected in a subsequent order.
    Accordingly, we find no error.
    Finally,      Mamalis    argues    that      the   prosecution       violated        §
    2518(6), because it did not file a progress report with the
    judge who issued the order.              Pursuant to § 2518(6), an order
    authorizing interception “may require reports to be made to the
    judge who issued the order showing what progress has been made
    toward achievement of the authorized objective and the need for
    continued interception.” 
    18 U.S.C. § 2518
    (6).                          Here, however,
    prior to the due date of the first progress report, Mamalis and
    the     other   defendants      had     been       arrested,    making        a    report
    unnecessary,       as   continued     interception       was    no   longer       needed.
    Therefore, we hold that the district court properly refused to
    suppress the evidence on this ground.
    3.
    Additionally, Mamalis argues that the district court erred
    in admitting the wiretap evidence because the government failed
    to submit a report to the AO, as required by 
    18 U.S.C. § 2519
    .
    The     government      contends    that      it     complied     in     March         2010.
    4
    Specifically, Mamalis alleges that the application and
    affidavit sought interception for a phone number ending in
    “2232,” while the wriretap order authorized an interception for
    a phone number ending in “2322.”
    15
    Regardless, even if the report was not properly made, Mamalis
    presents no authority suggesting that suppression is the proper
    remedy for failing to comply with this requirement.
    Section 2518(10)(a)provides that evidence may be suppressed
    when “the communication was unlawfully intercepted,” “the order
    of authorization or approval under which it was intercepted is
    insufficient on its face,” or “the interception was not made in
    conformity      with     the     order       of    authorization           or    approval.”
    Failure to submit a report to the AO falls under none of those
    conditions.         Accordingly,        we   hold       that       the    district      court
    properly admitted the evidence obtained by the wiretaps.
    C.
    Mamalis        contends    that    tangible        evidence        obtained    through
    the   search     of     his    hotel    room      and    residence         was   improperly
    admitted because the affidavits used to establish probable cause
    for the warrants contained evidence improperly obtained from the
    pen   registers        and     wiretaps.          He    argues      that    the     searches
    violated       the     Fourth     Amendment        and       the     evidence       obtained
    constitutes fruit of the poisonous tree.                       See U.S. Const. amend.
    IV (“The right of the people to be secure in their persons . . .
    against    unreasonable          searches         and    seizures,         shall    not   be
    violated . . . .”).
    As stated above, we review factual findings underlying the
    denial    of    a     motion    to   suppress          for   clear       error    and   legal
    16
    determinations de novo.         Hamlin, 
    319 F.3d at 671
    .           Further, when
    a motion to suppress has been denied, we review the evidence in
    the light most favorable to the government.               
    Id.
    Mamalis’s contention is without merit.               As explained above,
    the   pen    registers   and    wiretaps     were    lawful.      Therefore,      the
    evidence was properly admitted. Moreover, even if the evidence
    was   obtained      improperly,   the   investigating          agents    reasonably
    relied on the issuance of the warrants for Mamalis’s hotel room
    and home.         See United States v. Leon, 
    468 U.S. 897
    , 923, 927
    (1984)      (Blackmun,   J.,    concurring)         (summarizing       the    Court’s
    holing      as:   “[E]vidence   obtained      in    violation     of    the   Fourth
    Amendment by officers acting in objectively reasonable reliance
    on a search warrant issued by a neutral and detached magistrate
    need not be excluded, as a matter of federal law”).                      Therefore,
    the district court did not err in admitting this evidence.
    D.
    Next, Mamalis argues that the district court abused its
    discretion in admitting summary charts showing the defendants’
    cell phone usage vis-a-vis their physical locations during the
    robberies.        He argues that admission during the evidence portion
    of the trial was improper because the summary charts contained
    arguments and were not simply summaries of records.
    17
    1.
    We review a district court’s evidentiary rulings for abuse
    of discretion.         United States v. Kelly, 
    510 F.3d 433
    , 436 (4th
    Cir. 2007) (citing United States v. Young, 
    248 F.3d 260
    , 266
    (4th Cir. 2001)).
    In    the    Fourth     Circuit,    we   apply      a    two-part     test     to
    determine if summary charts were properly admitted.                      “First, we
    determine whether the charts aided the jury in ascertaining the
    truth.”    United States v. Johnson, 
    54 F.3d 1150
    , 1159 (4th Cir.
    1995)(citing United States v. Pinto, 
    850 F.2d 927
    , 935 (2d Cir.
    1988); United States v. Scales, 
    594 F.2d 558
    , 563 (6th Cir.
    1979)).    Second, “we consider the possible prejudice that would
    result    to   the     defendant   by   allowing   the       summary   chart      into
    evidence.”       
    Id.
        To determine whether the charts aided the jury
    in ascertaining the truth, we consider “the length of the trial,
    the complexity of the case, and the accompanying confusion that
    a large number of witnesses and exhibits may generate for the
    jury.”     
    Id.
           Additionally, to reduce the potential of unfair
    prejudice, the district court may (1) make both the person who
    prepared the charts and the evidence they used to prepare them
    available for cross-examination, and (2) properly instruct the
    jury as to how it may consider the charts.               
    Id.
    18
    2.
    Here, in light of the length, complexity, and nature of the
    case, the summary charts clearly aided the jury in ascertaining
    the truth.        The trial was seven days long and involved twenty-
    three witnesses.          See generally United States v. Loayza, 
    107 F.3d 257
     (4th Cir. 1997) (permitting admission of summary charts
    in a three-day trial for mail fraud that included testimony from
    thirteen       government        witnesses);         Johnson,      
    54 F.3d 1150
    (permitting admission of summary charts in a seven-day trial
    that included testimony from thirty witnesses).                          Furthermore,
    the   trial    involved     a    number    of   co-defendants,          numerous      cell
    phones,     pen    registers      and     wiretaps     authorized        for     various
    phones, and three violent robberies.                    These factors increased
    the complexity of the issues before the jury, and the summary
    charts enabled the jurors to untangle the intricate facts of the
    case.     Undeniably,      the     summary      charts     aided        the    jury    in
    ascertaining the truth.
    Nor did Mamalis suffer any unfair prejudice by the district
    court’s admission of the charts.                 In fact, the district court
    took a number of steps to protect Mamalis from any potential
    prejudice, including granting Mamalis pre-trial access to the
    charts and the underlying information used to prepare them and
    issuing    a   curative     instruction         to   the   jury    prior       to   their
    introduction.       Finally, the district court permitted Mamalis’s
    19
    counsel   to     cross-examine         the        detective     who      introduced      the
    summary charts.        Accordingly, we hold that the district court
    did not abuse its discretion when it admitted the summary charts
    into evidence.
    E.
    Mamalis      argues       that     the        district      court      abused       its
    discretion     when     it    declined        his     request       to    give    a     jury
    instruction defining reasonable doubt.                    We hold that this claim
    has no merit.
    A    district           court’s         determinations           regarding         jury
    instructions     are    reviewed       for        abuse   of   discretion.            United
    States v. Stotts, 
    113 F.3d 493
    , 496 (4th Cir. 1997); United
    States v. Russell, 
    971 F.2d 1098
    , 1107 (4th Cir. 1992).
    As   Mamalis      concedes,       our    precedent        establishes       that    the
    district court need not define reasonable doubt for the jury,
    even when such an instruction is requested by the jury.                                  See
    United States v. Walton, 
    207 F.3d 694
    , 696-97 (4th Cir. 2000)
    (en banc) (“[T]he well-established rule of this Circuit is that
    although the district court may define reasonable doubt to a
    jury upon request, the district court is not required to do
    so.”); United States v. Moss, 
    756 F.2d 329
    , 333 (4th Cir. 1985).
    Mamalis   asks    us    to     overrule       decisions        by     previous    panels.
    However, we decline to do so, as that is something only the en
    banc court of appeals or the Supreme Court of the United States
    20
    may do.   See United States v. Guglielmi, 
    819 F.2d 451
    , 457 (4th
    Cir. 1987).       Under controlling precedent, the district court was
    not required to define reasonable doubt, and thus we hold that
    the district court did not abuse its discretion.
    F.
    Mamalis contends that his sentence violates 
    18 U.S.C. § 924
    (c) because his convictions were part of an ongoing criminal
    scheme, rather than second or subsequent convictions.               The court
    reviews legal issues de novo.         United States v. Davenport, 
    445 F.3d 366
    , 370 (4th Cir. 2006), abrogated by Irizarry v. United
    States, 
    553 U.S. 708
     (2008).
    Section 924(c) states, in pertinent part,
    [A]ny person who, during and in relation to any crime
    of violence or drug trafficking crime . . . uses or
    carries a firearm, or who, in furtherance of any such
    crime, possesses a firearm, shall, in addition to the
    punishment provided for such crime of violence or drug
    trafficking crime . . . be sentenced to a term of
    imprisonment of not less than 5 years.
    . . . .
    In the case of a second or subsequent conviction under
    this subsection, the person shall be sentenced to a
    term of imprisonment of not less than 25 years....
    
    18 U.S.C. § 924
    (c)(emphasis   added).     As   Mamalis    recognizes,
    however, his claim is foreclosed by the holding in United States
    v. Deal, 
    508 U.S. 129
     (1993).         In Deal, the Supreme Court held
    that any § 924(c) conviction subsequent to an initial § 924(c)
    conviction,       whether   the   offenses    took   place     in    separate
    21
    incidents or not, qualifies as a second or subsequent conviction
    under § 924(c).     Id. at 135.       Accordingly, we conclude that the
    district court imposed proper sentences.
    G.
    Finally,   Mamalis      argues   that       his   sentence    violates    the
    Double   Jeopardy   Clause    because      the    indictment      referenced   the
    conspiracy count in each of the three § 924(c) firearms charges.
    See U.S. Const. amend. V ("No person shall . . . be subject for
    the same offence to be twice put in jeopardy of life or limb . .
    . .").   The court finds this claim to be meritless.
    In the indictment, Counts Three, Five, and Seven constitute
    charges for separate firearms convictions stemming from each of
    the three separate robberies in violation of § 924(c).                   Each of
    the § 924(c) counts referenced the conspiracy charge and the
    relevant Hobbs Act robbery charge as the predicate offenses.
    Therefore, a plain reading of the indictment establishes that
    each § 924(c) charge was alleged based upon distinct actions in
    separate robberies.       Furthermore, pursuant to Deal, 
    508 U.S. 129
    , it is clear that Mamalis’s sentences do not violate the
    Double Jeopardy Clause.
    22
    IV.
    Based on the foregoing, Mamalis's convictions and sentences
    are
    AFFIRMED.
    23