Adham Awad v. Barack Obama , 608 F.3d 1 ( 2010 )


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  •  Prtiteh 9tcrtes Maurt af &p)real~
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued April 5,20 10                   Decided June 2,2010
    ADHAMMOHAMMED AWAD,
    ALI            U.S.
    DETAINEE, NAVAL
    BASE,
    GUANTANAMO CUBA,
    BAY,
    APPELLANT
    BARACK
    OBAMA,
    PRESIDENT THE UNITED
    OF         STATES, AL.,
    ET
    APPELLEES
    Appeal from the United States District Court
    for the District of Columbia
    (NO. 1105-CV-02379-JR)
    John L. Ewald argued the cause and filed the briefs for
    appellant. Catherine Y. Lui entered an appearance.
    August E. Flentje, Attorney, U.S. Department of Justice,
    argued the cause for appellees. With him on the brief was
    Robert M. Loeb, Attorney.
    Before: SENTELLE,Chief Judge, GARLAND,
    Circuit Judge,
    and SILBERMAN, Senior Circuit Judge.
    Opinion for the Court filed by Chief Judge SENTELLE.
    SENTELLE,    Chief Judge: Adham Mohammed Ali Awad, a
    detainee at Guantanamo Bay, Cuba, appeals from the district
    court's denial of his petition for a writ of habeas corpus. We
    find no reversible error in the district court's finding that Awad
    was "part of' a1 Qaeda in December of 200 1. Awad admits that
    he traveled to Afghanistan in mid-September 2001 for the
    purpose of engaging in armed conflict against U.S. and allied
    forces. Evidence from multiple sources clearly supports the
    proposition that in December of 200 1 Awad joined a group of a1
    Qaeda fighters who had barricaded themselves inside a hospital
    and that these a1 Qaeda fighters treated Awad as one of their
    own. The correctness of the district court's factual findings is
    fbrther confirmed by the appearance of Awad's name on several
    a1 Qaeda documents. We also reject Awad's challenges to the
    district court's legal holdings as the issues have already been
    resolved by a prior decision of this court. Accordingly, we
    affirm the district court's denial of Awad's petition for a writ of
    habeas corpus.
    I.   BACKGROUND
    A. Legal Framework
    In the wake of the terrorist attacks of September 11,2001,
    the Congress of the United States passed a joint resolution
    "[tlhat the President is authorized to use all necessary and
    appropriate force against those nations, organizations, or persons
    he determines planned, authorized, committed, or aided the
    terrorist attacks that occurred on September 11, 2001, or
    harbored such organizations or persons, in order to prevent any
    future acts of international terrorism against the United States by
    such nations, organizations, or persons." Authorizationfor Use
    o Military Force, Pub. L. No. 107-40, 
    115 Stat. 224
     (200 1)
    f
    ("AUMF"). Acting under the authority of the AUMF, the
    United States initiated a military campaign in Afghanistan
    against the Taliban regime and the a1 Qaeda forces it protected.
    In pursuit of this campaign and in other parts of the world, still
    acting under the AUMF, the United States has captured and
    detained members of the enemy force. See Hamdi v. Rumsfeld,
    
    542 U.S. 507
    , 5 18-524 (2004) (plurality op.).
    The United States houses some of the detainees it captures
    at a secure military base at Guantanamo Bay, Cuba. The proper
    role of federal courts in evaluating the military's long-term
    detention of individuals held at Guantanamo Bay has developed
    over the past decade and has involved all three branches of
    government. The history of the litigation over the jurisdiction
    of federal courts to review the United States's detention of
    individuals at Guantanamo Bay is set forth in Boumediene v.
    Bush, 
    128 S. Ct. 2229
    ,2240-42 (2008), and we need not repeat
    the history here. Boumediene settled the question of our
    jurisdiction by holding that United States courts do have
    jurisdiction to entertain petitions for writs of habeas corpus from
    such prisoners. The present case involves such a petition.
    B. The Events at Minvais Hospital
    On or about December 7,2001, a small number of injured
    a1 Qaeda fighters (around nine) entered the Mirwais Hospital in
    Afghanistan. These fighters went to the second floor, barricaded
    themselves inside, and held their position through the display of
    weapons and the threat of killing everyone in the building.
    Local Afghan and allied forces laid siege to the hospital to try
    and break the a1 Qaeda barricade. This siege was to last for
    almost two months. During this time, the part of the hospital not
    under a1 Qaeda control continued to function and treat patients.
    Only two people left the barricaded area alive.           On
    December 2001, Majeed a1 Joudi ("a1 Joudi"), purportedly
    one of the a1 Qaeda fighters, was tricked into leaving the
    barricaded area and was captured by Afghan forces. His
    captors quickly turned him over to United States forces.
    Interrogators obtained a number of statements from a1 Joudi
    during subsequent interrogations. Then on December 1       2001,
    the a1 Qaeda fighters surrendered a man with an amputated right
    leg to the Afghan forces at the hospital. This man was quickly
    transferred to U.S. control. During subsequent interrogation, the
    United States was able to identify this man as Adham
    Mohammed Ali Awad ("Awad"), a Yemeni national who had
    traveled to Afghanistan in mid-September 2001, and the
    petitioner before us.
    The siege on the hospital continued for another month. In
    early January, one of the a1 Qaeda fighters was killed by his own
    grenade as he attempted to escape from the barricaded area. The
    standoff finally ended the last week of January 2002, when
    Afghan and allied forces killed the remaining a1 Qaeda fighters
    and retook the area of the hospital they had held.
    C. This Litigation
    Awad, who has been held at Guantanamo Bay, Cuba, since
    shortly after his capture in 2001, filed a petition in 2005 for a
    writ of habeas corpus in the United States District Court for the
    District of Columbia. The district court stayed Awad's petition
    during the jurisdictional litigation leading to Boumediene. After
    Boumediene established that federal courts have jurisdiction to
    hear petitions for writs of habeas corpus from detainees at
    Guantanamo Bay, the district court lifted the stay of Awad's
    case.
    The government responded to Awad's petition and asserted
    that it had the authority to detain Awad under the AUMF. As
    part of its defense of its detention of Awad, the government filed
    a factual return in the district court.
    The government introduced into evidence multiple
    statements from Awad's interrogations. Awad told his
    interrogators that he was born in 1982 in Khor Maxar, Yemen.
    He traveled to Kandahar, Afghanistan in mid-September 2001.
    In either November or December of 200 1, he was injured in an
    air raid; his injuries were serious enough to require eventual
    amputation of his right leg. At multiple times, Awad told his
    interrogators that his purpose in traveling to Afghanistan was to
    receive weapons training and to fight U.S. and allied forces. See
    ISN 88 Knowledgeability Brief (Feb. 6, 2002) ("he went to
    Afghanistan to become a fighter,"); ISN 88 SIR (July 23,2005)
    ("I went there [to Afghanistan] for two reasons: to visit an
    Islamic nation, and to have weapons training."); ISN 88 SIR
    (July 8, 2008) (the purpose of his trip was to "relax, gain
    weapons training and join the fight in Afghanistan.").
    The government also introduced into evidence a list of
    names known as the "Tarnak Farms Document." It is
    undisputed that Tarnak Farms was an a1 Qaeda training camp in
    Afghanistan that provided advanced weapons training to
    militants. When U. S. and allied forces captured the facility, they
    found a 100-page undated document. One of the items within
    the document was a list of names. In the list of names, the name
    "Abu Waqas" was listed twice, with one of the entries being
    crossed out. The government alleges that "Abu Waqas" is
    Awad's kunya, his honorific or pseudonym. Along with the list
    of names, this document also contained: "Notes from a weapons
    course. Instructions in small arms such as AK47, M16, S.V.D.
    sniper rifle, rocket launchers such as RPG2, RPG7, HAN, Z.K.I.
    Notes on aiming and distance calculations. Notes on types of
    ammunition and its specifications. Instruction from a sniper-
    training course." Joint Appendix 59 1-92.
    The government also introduced several statements of a1
    Joudi, the other person captured at Mirwais Hospital. On
    Decemberm      2001 (                 0           a1 Joudi gave ,
    his interrogators the names and descriptions of the eight a1
    Qaeda fighters he had seen in the Mirwais Hospital. One of the
    descriptions was of "Abu ((Wakaas)), a 28-year old Yemeni
    m
    male; had his right leg amputated." Dec.    2001 interrogation
    report of a1 Joudi. The government alleges that "Abu
    (Wakaas))" is another transliteration of Awad's kunya. Five of
    the names provided by a1 Joudi (including Awad's) match with
    names on the list in the Tarnak Farms Document.
    To further bolster its case, the government introduced into
    evidence contemporaneous news reports describing what
    occurred at the Minvais Hospital. Several of these news reports
    provided the general background of the siege at the hospital and
    the events that occurred within. See Thomas E. Ricks and Karl
    Vick, U S . Reports Calm in Afghanistan on Christmas Eve; At
    Kandahar Hospital, Arrest Brings Gunfire, WASH.      POST,Dec.
    25, 200 1, at A2 1; Drew Brown, Armed Patients, Not the Sick,
    Biggest Concern at Hospital, MIAMI     HERALD, Dec. 26,2001, at
    21A.
    Some of the other news articles directly implicate Awad as
    being part of the a1 Qaeda force at the hospital. One article
    described how the a1 Qaeda fighters "turned over a sick comrade
    yesterday, saying they could not care for him . . . The fighters
    surrendered their comrade because they believed his amputated
    leg had become infected, witnesses said." Drew Brown, Al-
    Qaeda Group Holed Up in Hospital; The Seven Wounded
    Fighters Threatened to Commit Suicide. One Seriously Injured
    Man was Released., PHIL.INQ., Dec. 30, 200 1, at A10. The
    reporter went on to quote an eyewitness to the exchange who
    described the a1 Qaeda fighters as saylng when handing over the
    man with the amputated leg: "He is our friend, but we cannot
    take care of him, so we must turn him over to you, regardless of
    what you do with him." 
    Id.
     Another news report quoted a
    doctor who went in to talk to the people behind the barricade.
    Karl Vick, For A Qaeda Patients, Cautious Care; With
    1
    Grenades Strapped to Their Sides, Injured Fighters Focus
    Wrath on U S . ,WASH.  POST,  Dec. 20,200 1, at A27. The doctor
    reported that all the people said: "We have just one way, and
    that is jihad against America." 
    Id.
    In support of his petition, Awad introduced into evidence an
    unsigned "affidavit," a declaration from his counsel, and
    additional statements he made to his interrogators. Awad argued
    that he had purposes in going to Afghanistan other than to fight
    U.S. and allied forces. He contended that while he traveled to
    Afghanistan to fight, he did not succeed in his goal of joining
    the fight. He claimed that he was injured by an airstrike while
    walking through a market in Kandahar, not near the Kandahar
    airport as the government maintains. Awad asserted that he
    went to the hospital for care, and in some way ended up behind
    the barricade. He denied having become "part o f ' a1 Qaeda.
    After making their filings, the parties cross-filed for judgment
    on the record. The district court held a hearing on the parties'
    cross-motions on July 3 1,2008.
    On August 12, 2009, the district court entered a
    memorandum order denying Awad's petition for a writ of
    habeas corpus. Awad v. Obama, 
    646 F.Supp.2d 20
     (D.D.C.
    2009). The district court said that it "formally 'received' all the
    evidence offered by either side but . . . assessed it item-by-item
    for consistency, the conditions in which the statements were
    made and documents found, the personal knowledge of a
    declarant, and the levels of hearsay." 
    Id. at 23
    . The district
    court dealt first with the legal issues in the case. It held that the
    government had the burden of establishing by a preponderance
    of the evidence the lawfulness of Awad's detention. 
    Id.
     at 23-
    24. The court also held that the government's authority to
    continue to detain Awad depended on the continuation of
    hostilities, not on the individual threat posed by Awad if he were
    released. 
    Id. at 24
    .
    The court then proceeded to its factual analysis. The court
    found that the reason Awad went to Afghanistan was to "join A1
    Qaida to fight against the U.S. after the September 11 attack on
    the World Trade Center." 
    Id.
     With regard to the Tarnak Farms
    Document, the court rejected Awad's denial that the name "Abu
    Waqas" referred to him because he had identified himself with
    such a name previously. 
    Id.
     But the court found the
    government's claim that Awad had received training at Tarnak
    Farms unsupported because "[wle do not know the purpose of
    the list or when it was written." 
    Id. at 25
    .
    The court made a factual finding that Awad was injured on
    November 1 or 2, 2001 and went to the hospital shortly
    thereafter. 
    Id. at 26
    . The court then discussed the remaining
    evidence. 
    Id. at 26-27
    .
    he court concluded, based on
    all these factual findings, that "it appears more likely than not
    that Awad was, for some period of time, 'part o f a1 Qaida. At
    the very least Awad's confessed reasons for traveling to
    Afghanistan and the correlation of names on a the [sic] list and
    clearly tied to a1 Qaida make it more likely than not
    that he knew the a1 Qaida fighters at the hospital and joined
    them in the barricade." 
    Id.
     The district court denied his petition
    for a writ of habeas corpus. 
    Id.
     Awad appeals from this adverse
    judgment.
    II. ANALYSIS
    Awad makes several legal and factual challenges to the
    district court's decision. Before considering the legal
    challenges, we will first address Awad's challenges to the
    factual findings of the district court.
    A. Evidentiary Challenges
    Awad makes three types of evidentiary arguments. First, he
    challenges the district court's reliance on certain individual
    pieces of evidence. Second, he defends two of the district
    court's factual findings that were favorable to him. Third, he
    argues that considering all of the evidence before the court, it
    was clear error to find that he was "part of' a1 Qaeda through his
    actions behind the barricade in Mirwais Hospital. We will
    consider these challenges in turn.
    We review a district court's factual findings for clear error,
    regardless of whether the factual findings were based on live
    testimony or, as in this case, documentary evidence. See
    Anderson v. City o Bessemer, 
    470 U.S. 564
    , 572 (1985). "We
    f
    further note that '[tlhis standard applies to the inferences drawn
    from findings of fact as well as to the findings themselves."'
    Overby v. Nat '1 Ass 'n o Letter Carriers, 595 F .3d 1290, 1294
    f
    (D.C. Cir. 20 10) (quoting Halberstam v. Welch, 
    705 F.2d 472
    ,
    486 (D.C. Cir. 1983) (alteration in Overby). "A finding is
    'clearly erroneous' when although there is evidence to support
    it, the reviewing court on the entire record is left with the
    definite and firm conviction that a mistake has been committed."
    Boca Investerings Partnership v. US., 3 
    14 F.3d 625
    , 629-30
    (D.C. Cir. 2003) (quoting United States v. United States Gypsum
    Co., 
    333 U.S. 364
    , 395 (1948)). But "[ilf the district court's
    account of the evidence is plausible in light of the record viewed
    in its entirety, the court of appeals may not reverse it . . . Where
    there are two permissible views of the evidence, the factfinder's
    choice between them cannot be clearly erroneous." Overby, 595
    F.3d at 1294 (quoting City o Bessemer, 
    470 U.S. at 573-74
    )
    f
    (omission in Overby).
    We will begin with Awad's challenges to the individual
    items of evidence. In evaluating these challenges, we do not
    weigh each piece of evidence in isolation, but consider all of the
    evidence taken as a whole. Cf:    United States v. Bowie, 
    198 F.3d 905
    , 912 (D.C. Cir. 1999) ("[Wle have been mindful of our
    responsibility to evaluate the impact of the undisclosed evidence
    not in isolation, but in light of the rest of the trial record.").
    Awad makes a general attack that the district court
    committed error in relying upon unreliable hearsay evidence.
    This general attack, however, does not further Awad's case. We
    have already held that hearsay evidence is admissible in this
    type of habeas proceeding if the hearsay is reliable. See Al-
    Bihani v. Obama, 
    590 F.3d 866
    , 879 (D.C. Cir. 2010) ("[Tlhe
    question a habeas court must ask when presented with hearsay
    is not whether it is admissible - it is always admissible - but
    what probative weight to ascribe to whatever indicia of
    reliability it exhibits."). The Supreme Court's plurality opinion
    in Hamdi, 
    542 U.S. at 533-34
    , expressly states:
    [Tlhe exigencies of the circumstances may demand
    that, aside from these core elements, enemy-
    combatant proceedings may be tailored to alleviate
    their uncommon potential to burden the Executive at
    a time of ongoing military conflict. Hearsay, for
    example, may need to be accepted as the most reliable
    available evidence from the Government in such a
    proceeding.
    Thus, the fact that the district court generally relied on items of
    evidence that contained hearsay is of no consequence. To show
    error in the court's reliance on hearsay evidence, the habeas
    petitioner must establish not that it is hearsay, but that it is
    unreliable hearsay. This Awad has not done.
    The district court relied upon the Tamak Farms Document
    to corroborate the statements of a1 Joudi and -
    .
    Awad alleges it was error for the district court to use the Tamak
    Farms Document for any purpose, as it had previously refused
    to rely on the Tamak Farms Document to show that Awad
    trained at Tamak Farms. Awad misreads the district court's
    opinion. The district court did not hold that the Tarnak Farms
    Document was useless or unreliable. The district court only
    found that the document was not necessarily a list of trainees, so
    it could not substantiate a finding that Awad trained at Tarnak
    Farms. 
    646 F.Supp.2d at 25
    . But such a finding does not
    preclude the district court from using the document for other
    purposes. Even though the district judge did not know what the
    purpose of the list of names was, he knew that it was a list found
    in an a1 Qaeda document discovered at a terrorist training camp
    that contained two listings of Awad's kunya. Awad does not
    challenge the district court's factual finding that the references
    in the document are to him. The district court took the Tamak
    Farms Document, considered the circumstances of the
    document, and weighted it accordingly in its analyses of the
    various questions with which it was presented. It was not error
    for the district court to find the document relevant on some
    issues, but not others.
    Awad attacks the district court's reliance on statements of
    a1 Joudi. Awad asserts that the government assessed a1 Joudi
    was lying when he denied his own involvement in a1 Qaeda, and
    therefore, none of his statements should be believed. But a1
    Joudi made two types of statements: he made statements
    exculpating himself and statements incriminating others. The
    government interrogators noted disbelief of a1 Joudi's
    exculpatory statements, but made no such notations as to a1
    Joudi's statements incriminating others. Awad argues that since
    the government assessed a1 Joudi to be a liar on one topic
    (whether he was part of a1 Qaeda), it was clear error to rely on
    his statements about different topics (whether others were part
    of a1 Qaeda).
    Such an argument is contrary to long established analysis of
    witness testimony. It is a standard jury instruction that a juror
    can choose to believe all of what a witness says, some of what
    a witness says, or none of what a witness says. See US. v.
    Glover, 73 
    1 F.2d 41
    ,44 n. 6 (D.C. Cir. 1984) ("You are the sole
    judge of the credibility of the witnesses. In other words, you
    alone are to determine whether to believe any witness and the
    extent to which any witness should be believed.") (quoting
    Criminal Jury Instructions for the District of Columbia,
    Instruction 2.11). In a1 Joudi's case, it accords with common
    sense that he may have had a motivation to lie about his own
    involvement in nefarious activity but not have the same
    motivation to lie about the involvement of another.
    Of course, the fact that a witness may have lied on one topic
    may be considered in determining the credibility of his
    statements about other matters. But that assessment, that
    weighing, is for the finder of fact. Our review of the fact
    finder's decision to credit some of the statements of an
    individual but not others is reviewed for clear error. Awad
    makes no showing that the district court committed clear error
    in crediting a1 Joudi's statements identifying the a1 Qaeda
    -
    fighters inside the hospital.
    Awad attacks the district court's reliance on correlation of
    names among the a1 Joudi list, the Tamak Farms Document, and
    because the names in the various lists do not
    match perfectly. But the govemment need not, and does not,
    assert that there is perfect correlation. Rather, the govemment
    asserts just what the district court found: the correlation of
    names on the lists is too great to be mere coincidence. There is
    no requirement of 100% overlap for one document to
    corroborate another. The listing of identical names in the
    and in a1 Joudi's list indicates that a1 Joudi's
    statements identifylng the other a1 Qaeda fighters were reliable.
    The district court did not err in finding that the correlation
    among names in the four lists lent credibility to a1 Joudi's
    statements identifylng the a1 Qaeda fighters.
    Awad defends two favorable factual findings of the district
    court: that Awad did not train at Tarnak Farms and that Awad
    amved at Minvais Hospital one month before the a1 Qaeda
    fighters arrived. The first argument is not relevant to our
    review; the government is not challenging the district court's
    factual finding that Awad did not train at Tarnak Farms and is
    not placing any reliance upon any such training for its authority
    to continue to detain Awad pursuant to the AUMF.
    As to the second argument, regarding when Awad arrived
    at the hospital, the district court found that Awad amved at the
    hospital on or about November 1,200 1. 
    646 F.Supp.2d at 26
    .
    The government argues that this factual finding was clearly
    erroneous and that he arrived in the first week of December
    along with the group of a1 Qaeda fighters who created the
    barricade. We need not decide this issue, as it does not affect
    the outcome of the case. The government's evidence that Awad
    was "part of' a1 Qaeda does not depend on when Awad arrived
    at the hospital. Rather, the factual assertion is simply that when
    the a1 Qaeda fighters took over part of Mirwais Hospital, Awad
    joined them behind the barricade. The truth of that assertion is
    unrelated to his arrival date. It is immaterial whether Awad had
    already been at the hospital for a month, a week, or a day. This
    factual issue is irrelevant to whether Awad was "part of' a1
    Qaeda. None of Awad's evidentiary arguments demonstrate
    clear error by the district court.
    We next consider whether the district court, in light of aN
    of the evidence, made an erroneous finding that Awad was "part
    of' a1 Qaeda. Reviewing all the evidence, it is plain that the
    district court made no error in its ultimate conclusion. Awad's
    statements of intent are undisputed. Awad repeatedly told U.S.
    interrogators that the reason he traveled to Afghanistan in mid-
    September 2001 was to join the fight against U.S. and allied
    forces. The district court found that the reason Awad traveled
    to Afghanistan was to fight, and Awad does not challenge that
    finding on appeal. The government acknowledges that intention
    to fight is inadequate by itself to make someone "part of' a1
    Qaeda, but it is nonetheless compelling evidence when, as here,
    it accompanies additional evidence of conduct consistent with
    '
    an effectuation of that intent.
    Other unchallenged evidence includes Awad's concession
    that he "was surrendered by the insurgents and detained by
    Afghan forces at Mirwais Hospital on December       200 1 . . . ."
    Appellant's Br. 5. The further evidence of the events at the
    hospital underscores how incriminating this concession is. A
    group of a1 Qaeda fighters took over part of the Minvais
    Hospital. The part of the hospital not under a1 Qaeda control
    continued functioning and treating patients. Awad admits that
    he was "surrendered by the insurgents." This supports the
    district court's understanding that Awad was behind the a1
    Qaeda barricade at the Mirwais Hospital. If Awad had not been
    behind the barricade with the a1 Qaeda fighters, he could not
    have been "surrendered" to U.S. allied forces. Awad could
    simply have left. But, as he tells us, he was surrendered by a1
    Qaeda forces. The district court could properly find that Awad
    was behind the barricade with the a1 Qaeda fighters.
    The district court also had before it evidence identifying
    '
    Of course, the AUMF grants authority to the
    President to detain individuals for reasons other than for
    being members of a1 Qaeda or the Taliban.
    Both the a
    The   -
    Awad as one of the a1 Qaeda fighters. The statements of a1
    Joudi identified Awad as being one of the a1 Qaeda fighters.
    This identification even specifically identified that Awad had an
    amputated leg.
    identification because of the overlap of names.
    n
    corroborates this
    d the Tarnak Farms Document
    include names used by Awad. Awad does not challenge the
    district court's factual finding that he used those names on
    appeal. While the appearance of his name on a1 Qaeda
    documents may not, by itself, be adequate to support a factual
    finding that he was "part of' a1 Qaeda, it certainly provides
    support for the district court's overall factual conclusion that
    Awad was "part of' a1 Qaeda.
    The court also had before it multiple news reports. These
    accounts support the finding that Awad was one of the a1 Qaeda
    fighters. While the news reports are hearsay, the district court
    could properly treat them as reliable. The reports were written
    contemporaneouslywith the events that occurred. The reporters
    who wrote the articles in December of 2001 had no reason to
    even imagine that the events occurring at the hospital would
    eventually be at issue in a court of law of the United States.
    They had no reason to falsify their reports. The information in
    the reports is hearsay, but as we discussed above, hearsay may
    be relied upon in this type of proceeding if the district court has
    reason to believe that the hearsay is reliable.
    To summarize, the evidence before the district court was
    that: Awad traveled to Afghanistan for the purpose of fighting
    against U.S. and allied forces; he was with the a1 Qaeda fighters
    behind the barricade in the hospital; he was surrendered by the
    a1 Qaeda fighters; a1 Joudi, who was there, identified him as
    being one of the a1 Qaeda fighters; a1 Joudi's statements were
    corroborated by documentary evidence; and Awad's name
    appeared in two highly relevant pieces of documentary
    evidence. Additionally, contemporaneous newspaper reports
    identified Awad as one of the a1 Qaeda fighters. Against this
    evidence, the district court had only Awad's self-serving
    statements of innocence, which the district court, as finder of
    fact, did not credit.
    Determining whether Awad is "part of' a1 Qaeda is a mixed
    question of law and fact. Whether our review of the district
    court's finding on this question is de novo or for clear error does
    not matter in this case because the evidence is so strong. Simply
    recounting the evidence establishes that under either standard of
    review, the district court's conclusion that Awad was "part of'
    a1 Qaeda was not erroneous. Awad has not come close to
    meeting his burden of showing reversible error in the district
    court's finding that Awad was "part of' a1 Qaeda at Minvais
    Hospital during December 200 1.
    B. Legal Challenges
    Awad challenges three of the district court's legal holdings.
    These we review de novo. See Al-Bihani, 590 F.3d at 870.
    First, Awad challenges the district court's holding that the
    government must prove its authority to continue to detain him
    by a preponderance of the evidence. He argues that the
    government has to meet its burden by clear and convincing
    evidence. He is incorrect. We have already explicitly held that
    a preponderance of the evidence standard is constitutional in
    evaluating a habeas petition from a detainee held at Guantanamo
    Bay, Cuba. See Al-Bihani, 590 F.3d at 878 ("Our narrow charge
    is to determine whether a preponderance standard is
    unconstitutional. Absent more specific and relevant guidance,
    we find no indication that it is.").
    The Al-Bihani holding follows the Supreme Court's
    guidance to lower courts in the Hamdi plurality. See Hamdi,
    
    542 U.S. at 534
     ("Thus, once the Government puts forth credible
    evidence that the habeas petitioner meets the enemy-combatant
    criteria, the onus could shift to the petitioner to rebut that
    evidence with more persuasive evidence that he falls outside the
    criteria. A burden-shifting scheme of this sort would meet the
    goal of ensuring that the errant tourist, embedded journalist, or
    local aid worker has a chance to prove military error while
    giving due regard to the Executive once it has put forth
    meaningful support for its conclusion that the detainee is in fact
    an enemy combatant."). Our precedent in Al-Bihani is clear, and
    "[wle, of course, are without authority to overturn a decision by
    a prior panel of this Court." Louisiana Public Service Comm 'n
    v. FERC, 
    522 F.3d 378
    ,390 (D.C. Cir. 2008). Awad seems to
    argue that there is some uncertainty in the evidentiary standard.
    Lest there be any hrther misunderstandings, let us be absolutely
    clear. A preponderance of the evidence standard satisfies
    constitutional requirements in considering a habeas petition
    from a detainee held pursuant to the AUMF.*
    Awad next argues that the district court erred in denying his
    petition without a specific factual finding that Awad would pose
    a threat to the Untied States and its allies if he were released.
    Again, Al-Bihani forecloses this argument. Al-Bihani makes
    plain that the United States's authority to detain an enemy
    combatant is not dependent on whether an individual would
    pose a threat to the United States or its allies if released but
    rather upon the continuation of hostilities. 590 F.3d at 874.
    Awad again attempts to insert uncertainty into this court's prior
    holding where there is none. Whether a detainee would pose a
    Like the Al-Bihani court, 590 F.3d at 878 n. 4, we
    note that our analysis here does not establish that
    preponderance of the evidence is the constitutionally-required
    minimum evidentiary standard.
    threat to U.S. interests if released is not at issue in habeas corpus
    proceedings in federal courts concerning aliens detained under
    the authority conferred by the AUMF.
    Awad's last challenge is that it is not enough that he was
    found to be "part of' a1 Qaeda. He argues that there must be a
    specific factual finding that he was part of the "command
    structure" of a1 Qaeda. There is no such requirement under the
    AUMF. See AUMF ("That the President is authorized to use all
    necessary and appropriate force against those nations,
    organizations, or persons he determines planned, authorized,
    committed, or aided the terrorist attacks that occurred on
    September 11,2001, or harbored such organizations or persons,
    in order to prevent any future acts of international terrorism
    against the United States by such nations, organizations, or
    persons."). Nowhere in the AUMF is there a mention of
    command structure.
    The distinction here is between defining what is necessary
    and what is sufficient. If the government can establish by a
    preponderance of the evidence that a detainee was part of the
    "command structure" of a1 Qaeda, this satisfies the requirement
    to show that he was "part of' a1 Qaeda. But there are ways other
    than making a "command structure" showing to prove that a
    detainee is "part of' a1 Qaeda. For example, if a group of
    individuals were captured who were shooting at U.S. forces in
    Afghanistan, and they identified themselves as being members
    of a1 Qaeda, it would be immaterial to the government's
    authority to detain these people whether they were part of the
    "command structure" of a1 Qaeda. Once Awad was "part of' a1
    Qaeda by joining the a1 Qaeda fighters behind the barricade at
    the hospital, the requirements of the AUMF were satisfied. See
    Al-Bihani, 590 F.3d at 872 (holding that under the AUMF, a
    person may be lawfblly detained if, inter alia, he was "part of'
    a1 Qaeda forces). Awad points us to no authority from this court
    or the Supreme Court that would counsel a different decision.
    III. CONCLUSION
    The federal judiciary now has the duty of evaluating the
    United States military's detention of those it deems part of
    enemy forces. Because of the unique nature of the conflict in
    which the United States is now involved, the Supreme Court has
    recognized that we may need to alter or amend our normal
    procedures to accommodate the important national security and
    practical concerns created by bringing these cases before Article
    1 1courts. In some cases district courts have ordered detainees
    1
    released for lack of evidence, but this is not such a case. Awad
    admits that the reason he traveled to Afghanistan was to join the
    fight against U.S. and allied forces. He then succeeded in that
    goal by joining a group of a1 Qaeda fighters who took over part
    of a hospital and barricaded themselves therein. We also reject
    Awad's legal challenges. Prior decisions of this court clearly
    hold that a preponderance of the evidence standard is
    constitutional and that there is no requirement that the
    government must show that a detainee would be a threat if
    released in order to detain him. Further, Awad points us to no
    legal authority for the proposition that he must be a part of a1
    Qaeda's "command structure" to be detained. Accordingly, we
    affirm the district court's denial of his petition for a writ of
    habeas corpus.
    So ordered.