United States v. Berrios , 132 F.3d 834 ( 1998 )


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  • UNITED STATES COURT OF APPEALS
    FOR THE FIRST CIRCUIT
    No. 95-2035
    UNITED STATES,
    Appellee,
    v.
    GEORGE BERRIOS, A/K/A ANTONIO CANDELARIO,
    Defendant - Appellant.
    No. 95-2036
    UNITED STATES,
    Appellee,
    v.
    MARIO MENDEZ, A/K/A PABLO,
    Defendant - Appellant.
    No. 95-2038
    UNITED STATES,
    Appellee,
    v.
    PEDRO GONZALEZ, A/K/A FRANK CASTILLO-PEREZ,
    Defendant - Appellant.
    No. 97-1121
    UNITED STATES,
    Appellee,
    v.
    HANNOVER ALBERTO SEGURA,
    Defendant - Appellant.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Robert E. Keeton, U.S. District Judge]
    Before
    Torruella, Chief Judge,
    Godbold,* Senior Circuit Judge,
    and Barbadoro,** District Judge.
    Malcolm   J.  Barach,  by  appointment  of  the  Court,  for
    appellant George Berr os.
    Jos  A. Espinosa,  with whom Paul F. Murphy  and MacDonald &
    Murphy were on brief for appellant Mario M ndez.
    Paul J. Garrity,  by appointment of the Court, for appellant
    Pedro Gonz lez.
    Karl R.D. Suchecki, by appointment  of the Court, with  whom
    Jennifer  Petersen  and Petersen  &  Suchecki were  on  brief for
    appellant Hannover Alberto Segura.
    William  F.  Sinnott,  Assistant  U.S. Attorney,  with  whom
    Donald K.  Stern,  United  States  Attorney,  was  on  brief  for
    appellee.
    January 6, 1998
    *  Of the Eleventh Circuit, sitting by designation.
    **  Of the District of New Hampshire, sitting by designation.
    -2-
    GODBOLD, Senior Circuit Judge.  This appeal arises from
    GODBOLD, Senior Circuit Judge.
    the  conviction of four defendants, Mario M ndez, Pedro Gonz lez,
    George Berr os, and  Hannover Alberto Segura of  various offenses
    relating to possession and distribution of heroin.  Their arrests
    and  convictions were  the result  of an extended  undercover and
    surveillance  operation  conducted  by   law  enforcement  agents
    seeking to  discover the source  of an increased heroin  trade in
    Portland, Maine.   Each defendant was convicted  of participating
    in a  conspiracy to  possess  and distribute  heroin and  various
    other crimes.   They  appeal, questioning  their convictions  and
    their sentences.  We AFFIRM the convictions and sentences.
    FACTUAL SUMMARY
    FACTUAL SUMMARY
    The  following  factual  synopsis  summarizes  evidence
    introduced at trial.   The facts  are resolved in the  light most
    favorable to  the verdict and  consistent with the record,  as is
    required by our  standard of  review in  an appeal  from a  final
    judgment of  conviction. U.S.  v. Maraj, 
    947 F.2d 520
    ,  522 (1st
    Cir. 1991).
    Between July 8,  1994 and August 23,  1994, Agent Scott
    Pelletier of  the Maine Drug  Enforcement Agency engaged  in four
    heroin transactions  with a man  named Pablo, later proved  to be
    Mario M ndez.  Pelletier had been introduced to Pablo by Lawrence
    Freeman,  a   cooperating  government  informant   familiar  with
    regional drug trade.  Each of the four transactions took place in
    Lowell, Massachusetts,  where all  four defendants  resided.   In
    each transaction Pelletier  purchased between 50 and  500 bags of
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    heroin  from Pablo.   During  the course  of these  transactions,
    Pelletier saw Gonz lez accompanying  and assisting M ndez several
    times and witnessed Segura conducting counter-surveillance at two
    different  locations  on  July  8,   1994.    After  the   fourth
    transaction between Pelletier and  M ndez, which took place at  a
    residence located  at 36  Park Street,  law enforcement  officers
    began  arresting individuals involved.  Gonz lez was found hiding
    near the Merrimack River, and M ndez was arrested outside 36 Park
    Street, later shown to be the location of the heroin "store" that
    the conspiracy operated.
    The  police  then  executed a  search  warrant  for 173
    University  Avenue,  also  in Lowell,  Massachusetts.    Based on
    extensive  surveillance   and  investigation  the   officers  had
    identified numerous phone  calls between the residence  of M ndez
    and  173 University  Avenue and  between 36  Park Street  and 173
    University.   Upon entering  the apartment  they observed  Segura
    running from  the bathroom  where plastic  bags containing  white
    powder were going  down the toilet.  Also,  within 173 University
    Avenue, the officers  seized numerous items of  drug distribution
    paraphernalia, including scales, sieves, and a "No Way Out" stamp
    used for labeling the type  of heroin purchased by Pelletier from
    M ndez.   They also found a large amount  of cash, 107.6 grams of
    crack cocaine and a loaded .357 Magnum handgun.
    Police next executed  a search warrant  at 205 and  203
    University  Avenue  where  they  arrested   George  Berr os,  the
    resident.   There the  officers seized  large amounts  of heroin,
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    crack  cocaine, and  various  items  identified  as  distribution
    paraphernalia  and  found  a notebook  containing  the  telephone
    number for 173 University Avenue.
    Other  evidence  at  trial  included the  testimony  of
    Christopher  Coughlin, who admitted  purchasing heroin  and crack
    from  the defendants.  Coughlin identified  M ndez  as Pablo  and
    Gonz lez as a man who  participated in the transactions but whose
    name he did not know.
    After  a nineteen  day  trial,  the  jury  returned  a
    verdict convicting each  defendant of various counts  of the nine
    count  indictment.   All  appellants were  convicted of  Count I,
    which  charged  that   the  defendants  had  participated   in  a
    conspiracy to possess with intent to distribute and to distribute
    heroin in violation  of 21 U.S.C.    846.  After  considering the
    presentencing  report of  probation  officers,  as  well  as  the
    objections  of both  parties to  the  report, the  district court
    sentenced the four defendant to various prison terms ranging from
    84 months for Berr os to 151 months for M ndez.
    DISCUSSION
    DISCUSSION
    We  have considered the arguments of each defendant and
    find no error in their convictions or sentences.  Accordingly, we
    affirm.   Because each  individual raises different  and numerous
    issues and  each is  represented by  different  counsel, we  will
    address  the contentions of  each defendant separately  with some
    necessary repetition.
    I.  M ndez
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    M ndez  was convicted  of  Counts  I-V,  consisting  of
    various  charges relating to possession and conspiracy to possess
    heroin  and  cocaine with  the  intent  to  distribute.   He  was
    sentenced  to  151  months  for  each  conviction  to  be  served
    concurrently.     The  sentence   was  the   result  of   several
    enhancements  which M ndez  contests  and a  significant downward
    departure.  The  district court explained the  downward departure
    by noting  that the lengthy  sentences for possession  of cocaine
    base  (crack)   were  unjustified  because  the   conspiracy  was
    primarily one to distribute heroin  rather than crack.  The court
    found that, by including the amount of confiscated  crack cocaine
    in the sentencing calculation, the sentence of each defendant was
    increased by as much as six  levels.  The court acknowledged that
    its  reason could  be  construed  as  a  discouraged  ground  for
    departure but found  that the case fell  out of the  heartland of
    prescribed  conduct, thus  warranting departure.   This  downward
    departure is not  questioned by the government;  therefore, we do
    not reach whether it  was proper.  The  departure resulted in  an
    offense  level of 35  for M ndez.  Based  on his criminal history
    category he received a 151 month sentence.
    We affirm M ndez's convictions and sentences.
    A.  Testimony of defense witness Fortin
    M ndez contends that his  conviction should be reversed
    because he was precluded  from offering the testimony  of Loretta
    Fortin.  The essence of her testimony would have been that M ndez
    was not the "Pablo" she was  introduced to during a drug sale  in
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    June of 1994.   Furthermore, M ndez called Fortin  to discuss her
    meeting  with Special  Agent  Connick in  August of  1994, during
    which  she  identified  the photograph  of  another  defendant as
    Pablo.   The relevancy  of this testimony  is that  an individual
    named Pablo  was the  supposed leader of  the conspiracy  and the
    dealer with  whom the  government initially  dealt.   Differences
    existed as to which member  of the conspiracy was actually Pablo,
    but several witnesses testified that M ndez was in fact Pablo and
    that M ndez carried a beeper with the number belonging to Pablo.
    The  substance of  Loretta Fortin's  proposed testimony
    was that she had one meeting  with Pablo in which he entered  the
    back  seat  of her  car while  she  remained in  the front.   Her
    husband introduced  the man as  Pablo, and they conducted  a drug
    transaction.  Fortin  was willing to testify that  M ndez was not
    the Pablo that  entered her car and that she selected a different
    defendant as Pablo  from police photographs.  The  court excluded
    this testimony because  it was based on  the inadmissable hearsay
    of the  introduction of  Pablo by her  husband.   M ndez contends
    that  this  exclusion  was  erroneous  because  Federal  Rule  of
    Evidence 801(d)(1)(c) provides that if a witness is available for
    cross examination,  prior statements  of  identification are  not
    hearsay.   This assertion  misses the  point.   Fortin's proposed
    testimony about her  husband's introduction of Pablo  created the
    hearsay problem, not her prior identification statements to Agent
    Connick.  To  make her testimony  credible she had to  admit that
    her  knowledge  of Pablo's  identity  was  based on  the  hearsay
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    statement of her husband - "this is Pablo."
    By  echoing   her  husband's  introduction   of  Pablo,
    Fortin's proposed  testimony meets the prerequisites  of hearsay.
    The  introduction  of  Pablo  is  a statement  not  made  by  the
    declarant in testimony  offered to prove the truth  of the matter
    asserted.    For Loretta  Fortin's  testimony to  be  tenable the
    statement made by her  husband must have been  true.  Because  we
    have  no  way  of  verifying that  Mr.  Fortin  was  sufficiently
    familiar with Pablo to identify him to Mrs. Fortin, her testimony
    about Pablo is classic hearsay and was properly excluded.
    Accordingly,  the  district   court  did  not  err   in
    disallowing  Fortin's testimony on hearsay grounds.  Moreover, if
    error, it would have been harmless.  Even if the introduction was
    not hearsay, given  Fortin's limited interaction with  Pablo, the
    weight  of her  testimony  could  not  overcome  the  substantial
    testimony of other  credible witnesses who had more  contact with
    M ndez/Pablo and  who testified  that M ndez  was in  fact Pablo.
    See U.S. v. Southard,  
    700 F.2d 1
    , 21  (1st Cir. 1983)  (harmless
    error  to improperly exclude admissible evidence as hearsay where
    substantial evidence existed to convict defendant).
    B.  M ndez' sentence was based on acquitted conduct
    M ndez also challenges  the fact that his  sentence was
    based  in part  on acquitted  conduct.  Specifically,  he asserts
    that the crack cocaine seized  by the officers during the arrests
    should not have  been considered for sentencing  purposes because
    he   was  acquitted  on   all  counts  involving   possession  or
    -8-
    distribution of cocaine.  This  assertion has no merit because "a
    jury's verdict of acquittal does not prevent the sentencing court
    from considering conduct underlying the acquitted charge, so long
    as  that  conduct has  been  proved  by  a preponderance  of  the
    evidence."  U.S. v. Watts, 
    117 S. Ct. 633
    , 638 (1997).
    C.  Enhancement of M ndez' sentence
    I.  M ndez' role as an organizer or leader
    The evidence  was not  insufficient to support  M ndez'
    four-level  enhancement  as   an  organizer  or  leader   of  the
    conspiracy as provided  by U.S.S.G    3B1.1(a).   Evidence showed
    that M ndez was always the person contacted when heroin was to be
    purchased,  and that  he always  returned  pager calls.   He  set
    prices  and   determined  the  location   of  the   transactions.
    Witnesses testified  that it  appeared that  men who  accompanied
    M ndez were his  subordinates and that he  hired a person  to man
    the heroin "store" at 36 Park Street from 9:00 a.m. to  6:00 p.m.
    daily.  Other evidence offered by the government in its objection
    to the  presentence report tended  to suggest that M ndez  was in
    fact  the leader of  a conspiracy that consisted  of five or more
    individuals.
    We will not  reverse a district court's finding of fact
    regarding  the  role  of  the  defendant  unless  it  is  clearly
    erroneous or based  on a mistake of  law.  U.S. v. Cali,  
    87 F.3d 571
    ,  574 (1st  Cir.  1996).   Based  on  the extensive  evidence
    offered at  trial and to the sentencing  court that M ndez was in
    fact  an  organizer  and  a  leader, we  hold  that  the  court's
    -9-
    sentencing was not clearly erroneous.
    ii.  Transacting of drug sales in a school zone
    M ndez   questions   his  one-level   enhancement   for
    transacting a  drug sale  in a  school zone  on  the ground  that
    evidence of the proximity of a school to any drug transaction was
    not introduced at trial.  However, the record indicates that such
    evidence was  introduced at  the sentencing hearing  and was  not
    objected to by any defendant.  The evidence supporting the school
    zone  enhancement consisted  of an  affidavit  signed by  Special
    Agent Bruce  Tavers stating  that the  drug transactions  at Fort
    Hill Park in Lowell, Massachusetts took place within one thousand
    feet of a junior high school.
    At a sentencing hearing the court may consider evidence
    that would  be inadmissable  at trial so  long as  the sentencing
    court determines that the  evidence has a "sufficient  indicia of
    reliability  to support its probable accuracy."  U.S. v. Tardiff,
    
    969 F.2d 1283
    ,  1287 (1st Cir.  1992).   The affidavit of  a law
    enforcement   officer  familiar  with  the  locale  of  the  drug
    transaction and  the  surrounding area  is sufficiently  reliable
    that a court  can accept it as evidence  for sentencing purposes.
    M ndez  did  not object to  this evidence, and  we find no  plain
    error.  The  affidavit was properly admitted to  support the one-
    level school zone enhancement.
    iii.  Codefendant's possession of a firearm
    M ndez'  two-level  enhancement  for  possession  of  a
    firearm during the  drug offense was not error  although he never
    -10-
    actually  possessed  or  used  a  gun  during  any  of  the  drug
    transactions.  He  was arrested at a different  locale from where
    the gun was found,  but evidence  showed that he was seen exiting
    the  residence where  the gun  was found,  that he had  made many
    calls  to this residence, that the residents were coconspirators,
    and  that the  residence was  a  center for  the drug  operation.
    These  facts are  sufficient  for  the  enhancement  because  the
    sentencing guidelines require  only that a gun  be present during
    some  portion of  an ongoing crime.  See U.S.S.G.    2D1.1(b)(1),
    commentary at  n.3.  Because  the defendants were convicted  of a
    continuing conspiracy the firearm was present during the crime.
    Once  the   presence   of  a   weapon  is   established
    enhancement is  proper unless the  defendant demonstrates special
    circumstances that show a clear improbability that the weapon was
    connected to the drug  offense.  U.S. v. Lagasse, 
    87 F.3d 18
    , 22
    (1st Cir. 1996).   The government offered proof that the  gun was
    present during  the drug  conspiracy, and  the defendant  did not
    offer  any special circumstances  that would make  the connection
    between   the  gun  and  the  crime  improbable;  therefore,  the
    enhancement was proper.1
    1  M ndez mentions Bailey v. U.S., 
    116 S. Ct. 501
    ,  508-9 (1995),
    as authority that  the enhancement was  improper, but Bailey  has
    been  construed as not affecting sentencing enhancements based on
    the possession of firearms during  certain offenses.  See U.S. v.
    Gary, 
    74 F.3d 304
    ,  317 n.11 (1st Cir.), cert denied,  
    116 S. Ct. 2567
     (1996).  Bailey only restricted convictions under  18 U.S.C.
    924(c)(1)  to  those  instances  where  a  defendant  actively
    employed a firearm during the offense. Bailey, 
    116 S. Ct. at
    508-
    9(recognizing that sentencing guidelines may provide enhancements
    for mere possession of a firearm during other offenses).
    -11-
    II.  Gonz lez
    Pedro Gonz lez  was convicted of  Counts I,  IV, and  V
    consisting  of   various  charges  relating  to   possession  and
    conspiracy to possess  heroin with intent to distribute.   He was
    sentenced to  135 months  concurrent for  each  conviction.   His
    original  sentence was calculated  by his being  held responsible
    for  113.7  grams of  crack  cocaine  and  307 grams  of  heroin,
    resulting  in a base  offense level of  33.  He was  then given a
    two-level adjustment for  obstruction of justice for  providing a
    false name and  personal history and a  two-level enhancement for
    possession  of a  firearm  during  a  drug  trafficking  offense,
    resulting  in a  total offense level  of 37.   The district court
    departed    downward  four  levels  because  it  found  that  the
    conspiracy  was primarily for  the distribution of  heroin rather
    than crack  cocaine.   Because he found  that the  crack offenses
    were  outside   the  heartland  offenses  under   the  applicable
    guideline, he granted a  four-level downward departure, resulting
    in a new  base offense level of  33.  After the  court considered
    his criminal history category, he  was sentenced to 108 months in
    prison.  We affirm his sentence.
    A. Obstruction of justice enhancement
    Gonz lez contends that  he did not deserve  a two-level
    enhancement  for   obstruction  of  justice  because   the  false
    statements  he  made concerning  his identity  did not  amount to
    materially false  information as  required by  U.S.S.G.    3C1.1.
    Section  3C1.1  provides   that  a  two  level   enhancement  for
    -12-
    obstruction  is  proper  where a  defendant  provides "materially
    false information" to a judge, magistrate or a probation officer.
    U.S.S.G.    3C1.1, commentary at  n.3(f)&(h).  For information to
    be material it need only have  the potential to affect the  issue
    under determination, including incarceration period, condition of
    release, or whether  the wrongful conduct  has been mitigated  in
    some way. U.S.S.G.   3C1.1, commentary at n.5; U.S. v. Kelley, 
    76 F.3d 436
    , 441 (1st Cir. 1996).
    By offering  a false name, date of  birth, and personal
    history throughout the trial and during sentencing Gonz lez hid a
    prior conviction,  his age, his  residence, and the fact  that he
    was  seeking to defraud immigration officials by participating in
    a sham  marriage for the  purpose of obtaining citizenship.   The
    substance and nature of these misrepresentations are material for
    their potential to affect sentencing determinations.  Because the
    falsehoods "could have  impacted the decisions of  the sentencing
    court" the two-level  enhancement for obstruction of  justice was
    proper.  Kelley, 
    76 F.3d at 441
    .
    B. Failure to prove the substance found was crack cocaine
    The government  did not fail  to sustain its  burden of
    proving  that the substance  confiscated from the  conspiracy was
    actually  crack cocaine rather  than some other  form of cocaine.
    Gonz lez did  not argue at trial that the substance may have been
    some other form of cocaine than crack, thus we would have to find
    plain  error.   We cannot  find  plain error  unless the  desired
    factual  finding is  the  only one  rationally  supported by  the
    -13-
    record below. See U.S. v.  Olivier-D az, 
    13 F.3d 1
    , 12  (1st Cir.
    1993).    Gonz lez did  not  offer  any  evidence to  combat  the
    government' assertion that the substance  was crack.  Only if the
    record clearly  showed  that the  substance could  not have  been
    crack would we be justified in finding plain error.  
    Id.
      Because
    the record supports  the district court's finding  for sentencing
    purposes, there was no plain error.
    C.  Ineffective assistance of counsel
    Nothing in the record supports Gonz lez' assertion that
    he was denied  effective assistance of counsel  when his attorney
    advised  him that  he  could  not receive  a  lesser sentence  by
    pleading guilty  to the crime.   "We have held  with a regularity
    bordering  on   the  monotonous  that   fact-specific  claims  of
    ineffective assistance cannot  make their debut on  direct review
    of    criminal  convictions,  but,  rather,  must  originally  be
    presented to,  and acted upon by, the trial  court."  See U.S. v.
    Mala, 
    7 F.3d 1058
    ,  1062-63 (1st Cir  1993); U.S. v. McGill,  
    952 F.2d 16
    , 19 (1st Cir. 1991).
    Since  claims  of  ineffective assistance
    involve a binary  analysis--the defendant
    must   show,     first,  that   counsel's
    performance      was     constitutionally
    deficient   and,   second,     that   the
    deficient   performance  prejudiced   the
    defense,  such  claims  typically require
    the  resolution  of factual  issues  that
    cannot  efficaciously be addressed in the
    first instance by  an appellate tribunal.
    In addition,  the  trial judge, by reason
    of his  familiarity  with  the  case,  is
    usually in the   best position to  assess
    both   the    quality   of    the   legal
    representation afforded  to the defendant
    in the  district court and the  impact of
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    any  shortfall in  that   representation.
    Under ideal  circumstances, the  court of
    appeals should have   the benefit of this
    evaluation;    elsewise,  the  court,  in
    effect, may be playing  blindman's buff.
    Mala,  
    7 F.3d at 1062-63
      (citation  omitted).   This court  has
    dismissed without  prejudice portions of an appeal relating to an
    ineffective  assistance claim  and  suggested that  the defendant
    should litigate such a claim through the medium of an application
    for post-conviction relief.  See  Mala, 
    7 F.3d at 1063
    .   Because
    we have no factual record upon which to judge Gonz lez' claims of
    ineffective assistance, we reject this  claim for now and suggest
    that the  proper forum for  his claim is through  application for
    post-conviction relief.
    III.  Berr os
    George Berr os was convicted  of Counts I, VI, and  VII
    consisting  of  various  charges   relating  to  possession   and
    conspiracy  to  possess   heroin  and  cocaine  with   intent  to
    distribute.   He was  sentenced to 84  months concurrently.   His
    original sentence was  calculated by holding him  responsible for
    26.08  grams of  crack  cocaine  and 307  grams  of heroin  which
    resulted in a base offense level of 30.  He was then given a two-
    level adjustment for obstruction of justice for providing a false
    name and personal history, resulting  in a total offense level of
    32.   The  court then  departed downward  between three  and four
    levels  based on  reasoning discussed  previously concerning  the
    nature  of the conspiracy.   After consideration  of his criminal
    history category, Berr os was sentenced to 84 months.
    -15-
    Berr os questions both his conviction and sentence.  We
    affirm both.
    A.  Sufficiency of the evidence
    Berr os   argues  that   the  evidence   presented  was
    insufficient to sustain his  conviction for conspiracy.  He  says
    that the government presented no  evidence that he assented to be
    a part  of the  conspiracy or participated  in the  conspiracy to
    distribute  heroin.   We  customarily  must  decide  whether  the
    evidence,    considered  in  the  light  most  favorable  to  the
    government  -  "a perspective  that  requires  us to  draw  every
    plausible inference in line with the verdict and to resolve every
    credibility  conflict  in the  same  fashion"  -  would  allow  a
    rational jury to  find that guilt was proved  beyond a reasonable
    doubt.  U.S. v. Santiago, 
    83 F.3d 20
    , 23 (1st Cir. 1996).
    Sufficient evidence existed  for the jury to  find that
    Berr os was a member of the conspiracy.  Police officers observed
    him carrying  several bags of  heroin and found large  amounts of
    drugs   and   distribution   paraphernalia   at  his   residence.
    Furthermore,  the sentencing  court found  that  Berr os was  the
    supplier  of heroin  to M ndez  and the  other conspirators.   We
    reject  Berr os' contention that the  evidence showed only that a
    buyer-seller  relationship  rather   than  a  conspiracy  existed
    between him and M ndez.
    Whether a true  conspiracy exists turns on  whether the
    seller knew that  the buyer was reselling the  drugs and intended
    to  facilitate  those  resales.   Santiago,  
    83 F.3d at 23-24
    .
    -16-
    Therefore,  knowledge   and  intent   are  the  touchstones   for
    sufficiently  proving a  conspiracy.    The government  presented
    sufficient evidence to show that Berr os knew that M ndez and his
    associates were reselling the heroin  and that he intended to aid
    these transactions  by supplying large  amounts of heroin  to the
    conspiracy.  Evidence  of Berr os' involvement in  the conspiracy
    was sufficient for a reasonable jury to convict.
    B.  Obstruction of justice enhancement
    Much like appellant  Gonz lez, Berr os challenges  that
    portion  of his sentence  resulting from a  two-level enhancement
    for  obstruction  of  justice.    He  contends  that   the  false
    information he provided  to the government  was not material  and
    did  not significantly  impede  investigation or  prosecution  as
    required by  the guidelines for an obstruction enhancement.  Once
    again  we reject  this argument.   Berr os  not only  presented a
    false  name to the magistrate judge and district court throughout
    trial, but he hid  the status of  his citizenship by claiming  to
    come  from Puerto  Rico.   By  hiding his  true identity  Berr os
    concealed that he had previously been arrested by the Immigration
    and Naturalization  Service in 1991  and had  fled after  posting
    bail.
    For  information to be  material it need  only have the
    potential  to  affect  an issue  under  determination,  including
    incarceration  period,  condition  of  release,  or  whether  the
    wrongful conduct  has  been mitigated  in  some way.  U.S.S.G.
    3C1.1, commentary at n.5; U.S. v.  Kelley, 
    76 F.3d 436
    , 441  (1st
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    Cir.  1996).   Giving a  false identity  and  pretending to  be a
    citizen of  this country, as  well as concealing facts  that made
    Berr os a known flight risk, could have affected some issue under
    determination by the court, including bail.  Although he provided
    his  real   identity  to  the  probation  officer  prior  to  the
    preparation  of  the  presentencing  report  and  the  sentencing
    hearing, Berr os  had participated  in an  entire criminal  trial
    under a false  name and status, which amounted  to an obstruction
    of justice.
    C.  Sentencing Guidelines and the equal protection clause
    Berr os  contends that the court enforced "a vague law"
    when it refused to treat crack cocaine as equal to powder cocaine
    for sentencing purposes.  Berr os noted that  the U.S. Sentencing
    Commission has prepared a report demonstrating the disparity that
    exists between the  sentencing guidelines for powder  cocaine and
    crack  cocaine.   We  are bound  by the  prior decisions  of this
    circuit which  have rejected this  argument.  See, e.g.,  U.S. v.
    Andrade, 
    94 F.3d 9
    , 14-15 (1st Cir. 1996);  U.S. v. Singleterry,
    
    29 F.3d 733
    , 739-41 (1st Cir. 1994).  Until the en banc court of
    this circuit, the U.S. Supreme Court, or Congress  itself accepts
    this assertion of disparity and finds it untenable, challenges to
    the  sentencing  guidelines  based   on  the  disparity   between
    sentences for crack cocaine  and powder cocaine will continue  to
    fail.  See  Irving v. U.S., 
    49 F.3d 830
    , 833-4 (1st  Cir. 1995);
    U.S. v. Wogan, 
    938 F.2d 1446
    , 1449 (1st Cir.1991).
    IV.  Segura
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    Segura  was convicted  by a  jury  of Counts  I and  II
    consisting  of   various  charges  relating  to   possession  and
    conspiracy  to  possess heroin  and  cocaine with  the  intent to
    distribute.  He  was sentenced to 108 months  for each conviction
    concurrently.   His original  sentence was calculated  by holding
    him responsible for 113.7 grams of crack cocaine and 307 grams of
    heroin,  resulting in a  base offense level  of 32.   He was then
    given  a one-level  adjustment for  transacting drug  sales in  a
    school  zone and  a two  level  enhancement for  possession of  a
    firearm during  the offense,   this resulting in a  total offense
    level of 35.  The court then departed downward  four levels based
    on the  reasoning discussed  above concerning  the nature of  the
    conspiracy.     After  consideration  of   his  criminal  history
    category, Segura was sentenced to 108.
    He challenges his conviction and sentence and we affirm
    both.
    A.  Sufficiency of the evidence
    Segura maintains that  the evidence presented at  trial
    was insufficient to establish that he knowingly and intentionally
    possessed heroin with the intent to distribute it or conspired to
    do so.   In  considering whether  sufficient evidence to  convict
    exists, we must consider the evidence in the light most favorable
    to the  verdict and  reverse only  if no rational  trier of  fact
    could have found  him guilty.  U.S.  v. Santiago, 
    83 F.3d 20
    , 23
    (1st Cir. 1996).  The fact that the entire case against Segura is
    based  on circumstantial,  rather than  direct,  evidence has  no
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    bearing  on  sufficiency;  both  types  of  evidence  provide  an
    adequate basis for conviction.  See  U.S. v. Valerio, 
    48 F.3d 58
    ,
    63 (1st Cir. 1995).
    The government presented  two pieces of evidence  that
    tended to link Segura to the conspiracy.  First was the testimony
    of Agent Scott  Pelletier of the  Maine Drug Enforcement  Agency,
    who  identified  Segura   as  the  person  engaged   in  counter-
    surveillance  during at  least  one  of  the  drug  transactions.
    Pelletier  was the  undercover agent  who  participated in  these
    transactions, and his testimony about the possibility of counter-
    surveillance was  corroborated by a  videotape that showed  a car
    suspiciously  circling the area  where the drug  transaction took
    place.
    Second  was testimony  of officers  on  the scene  when
    Segura  and  others  were  arrested  at  173  University  Avenue.
    Officers testified that they saw Segura running from the bathroom
    and   heard  the  toilet  flushing  and  Inspector  Robert  Reyes
    testified that when he  ran into the bathroom he saw plastic bags
    containing a white  powdery substance go down the  toilet.  After
    Segura and others were arrested the police found  drugs, numerous
    items  of distribution paraphernalia and  a loaded .357 Magnum at
    the scene.
    Taken together,  Pelletier's identification  of Segura
    as  the counter-surveillance man  and Reyes' testimony  about the
    toilet were sufficient  to convict.  Construing this  evidence in
    favor of  the government,  Segura's presence at  two of  the drug
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    transactions,  his  presence  at  what appears  to  be  the  drug
    conspiracy's center of operations, and his attempt to  dispose of
    evidence  of  the conspiracy,  taken  together show  that  he had
    knowledge of the conspiracy and  that he intended to  participate
    in it.   See U.S.  v. Santiago, 
    83 F.3d 20
    ,  23 (1st cir.  1996)
    (knowledge and intent are touchstones of conspiracy  conviction).
    We  cannot say  that  no  reasonable jury  could  have found  him
    guilty.
    B.  Segura's sentence
    I.  A codefendant's possession of a firearm
    Segura, like M ndez,  contends that he should  not have
    received  a two-level  enhancement for  possession  of a  firearm
    during  the drug offense  because he never  actually possessed or
    used  a gun.  He was arrested  at the residence where the gun was
    found, and evidence existed that this residence was the center of
    operations  for the drug conspiracy.  These facts are sufficient.
    The  sentencing guidelines  require only  that a  gun be  present
    during  some  portion  of  an  ongoing crime.    See  U.S.S.G.
    2D1.1(b)(1),  commentary  at  n.3.  Because  the defendants  were
    convicted of  a continuing  conspiracy, the  firearm was  present
    during the crime.
    Once   the  presence   of  a   weapon   is  established
    enhancement is  proper unless the defendant  demonstrates special
    circumstances that show a clear improbability that the weapon was
    connected to  the drug offense.  U.S. v.  Lagasse, 
    87 F.3d 18
    , 22
    (1st Cir. 1996).  Segura  did not offer any special circumstances
    -21-
    that  would make  the connection  between the  gun and  the crime
    improbable.  The enhancement was proper.
    ii.  Transaction of a drug sale in a school zone
    Segura argues  that the  government did  not offer  any
    reliable proof that  any of the  drug sales  took place within  a
    protected zone. He  acknowledges that the government  offered the
    affidavit of Special Agent Bruce Tavers as proof of the proximity
    of  a junior high  school; however,  he says  that this  proof is
    insufficient because it lacked an evidentiary foundation.
    In  this  circuit  a   sentencing  court  may  consider
    evidence that would  be inadmissable at trial under  the rules of
    evidence  so long  as the  sentencing court  determines  that the
    evidence has a "sufficient indicia of reliability  to support its
    probable accuracy."   U.S. v.  Tardiff, 
    969 F.2d 1283
    ,  1287 (1st
    Cir. 1992).   The affidavit of a  law enforcement officer  who is
    familiar  with  the  locale  of  the  drug  transaction  and  the
    surrounding area is sufficiently reliable that a court can accept
    it as evidence for sentencing purposes.  Segura's enhancement for
    transacting  drug sales  within a  school  zone was  sufficiently
    supported and proper.
    iii.  Segura's sentence was partially based on
    acquitted conduct
    Segura  also challenges the fact that his sentence was,
    in  part,  based   on  acquitted  conduct,  i.e.,   his  sentence
    calculation should not have included the amount of  crack cocaine
    found at the arrest scene because he was acquitted of all charges
    involving possession or distribution of crack cocaine.  "A jury's
    -22-
    verdict of acquittal  does not prevent the  sentencing court from
    considering conduct underlying  the acquitted charge, so  long as
    that conduct has been proved by a preponderance of the evidence."
    U.S. v. Watts, 
    117 S. Ct. 633
    , 638 (1997).
    CONCLUSION
    CONCLUSION
    We  AFFIRM   the  convictions  and   sentences  of  all
    AFFIRM
    appellants.
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