Affirmed by published opinion. Judge KING wrote the opinion, in which Judge DAVIS and Judge KEENAN joined.
*449 OPINION
In the early morning hours of April 1, 2010, on the high seas between Somalia and the Seychelles (in the Indian Ocean off the east coast of Africa), the defendants— Abdi Wali Dire, Gabul Abdullahi Ali, Abdi Mohammed Umar, Abdi Mohammed Gurewardher, and Mohammed Modin Hasan— imprudently launched an attack on the USS Nicholas, having confused that mighty Navy frigate for a vulnerable merchant ship. The defendants, all Somalis, were swiftly apprehended and then transported to the Eastern District of Virginia, where they were convicted of the crime of piracy, as proscribed by 18 U.S.C. § 1651, plus myriad other criminal offenses. In this appeal, the defendants challenge their convictions and life-plus-eighty-year sentences on several grounds, including that their fleeting and fruitless strike on the Nicholas did not, as a matter of law, amount to a § 1651 piracy offense. As explained below, we reject their contentions and affirm.
I.
A.
According to the trial evidence, the USS Nicholas was on a counter-piracy mission in the Indian Ocean when, lit to disguise itself as a merchant vessel, it encountered the defendants shortly after midnight on April 1, 2010. 1 The Nicholas was approached by an attack skiff operated by defendant Hasan and also carrying defendants Dire and Ali, while defendants Umar and Gurewardher remained with a larger mother-ship some distance away. From their posts on the Nicholas, crew members could see by way of night-vision devices that Hasan was armed with a loaded roeket-propelled grenade launcher (commonly referred to as an “RPG”), and that Dire and Ali carried AK-47 assault rifles.
The captain of the USS Nicholas, Commander Mark Kesselring, directed his gunners to man their stations and prepare to fire, and ordered his unarmed personnel inside the skin of the ship for safety. When the defendants’ attack skiff was within sixty feet of the Nicholas’s fantail (its lowest and thus most accessible point), Dire and Ali discharged the first shots — bursts of rapid, automatic fire from their AK-47s aimed at the Nicholas and meant to attain its surrender. The Nicholas’s crew responded in kind, resulting in an exchange of fire that lasted less than thirty seconds. Bullets from Dire and Ali’s AK-47s struck the Nicholas near two of its crew members, but the defendants’ brief attack was (thankfully) casualty-free. Dire, Ali, and Hasan then turned their skiff and fled, with the Nicholas in pursuit.
During the chase, sailors on the USS Nicholas observed a flashing light on the horizon — a beacon from Umar and Gurewardher to lead the attack skiff back to the mothership. Commander Kesselring, however, managed to keep the Nicholas between the defendants’ two vessels to thwart the attempted reunion. Meanwhile, Dire, Ali, and Hasan threw various items from the skiff overboard into the Indian Ocean, discarding the RPG, the AK-47s, and a ladder that would have enabled them to board the Nicholas. About thirty minutes into the pursuit, the Nicholas captured the three defendants in the skiff. Thereafter, the Nicholas chased and captured the two defendants in the mothership. A suspected second attack skiff, which had appeared on radar but did not close on the Nicholas, was never found.
*450 The defendants’ strike on the USS Nicholas was consistent with an accustomed pattern of Somali pirate attacks, designed to seize a merchant ship and then return with the vessel and its crew to Somalia, where a ransom would be negotiated and secured. Indeed, on April 4, 2010, during questioning aboard the Nicholas, the defendants separately confessed to participating willingly in a scheme to hijack a merchant vessel, and they provided details about their operation.
B.
The grand jury in the Eastern District of Virginia returned a six-count indictment against the defendants on April 20, 2010, and a fourteen-count superseding indictment (the operative “Indictment”) on July 7, 2010. The Indictment, which alleged facts consistent with the subsequent trial evidence, contained the following charges:
• Count One — Piracy as defined by the law of nations (18 U.S.C. § 1651);
• Count Two — Attack to plunder a vessel (18 U.S.C. § 1659);
• Count Three — Act of violence against persons on a vessel (18 U.S.C. §§ 2291(a)(6) and 2290(a)(2));
• Count Four — Conspiracy to perform an act of violence against persons on a vessel (18 U.S.C. §§ 2291(a)(9) and 2290(a)(2));
• Counts Five and Six — Assault with a dangerous weapon within a special maritime jurisdiction (18 U.S.C. § 118(a)(3));
• Counts Seven and Eight — Assault with a dangerous weapon on federal officers and employees (18 U.S.C. § 111(a)(1) and (b));
• Count Nine — Conspiracy involving a firearm and a crime of violence (18 U.S.C. § 924(o));
• Counts Ten and Eleven — Using, carrying, and possessing a firearm in relation to a crime of violence (18 U.S.C. § 924(c)(l)(A)(iii));
• Count Twelve — Using, carrying, and possessing a destructive device in relation to a crime of violence (18 U.S.C. § 924(c)(1)(A) and (c)(l)(B)(ii));
• Count Thirteen — Carrying an explosive during the commission of a felony (18 U.S.C. § 844(h)(2)); and
• Count Fourteen — Conspiracy to carry an explosive during the commission of a felony (18 U.S.C. § 844(m)). 2
The Indictment identified the Eastern District of Virginia as the proper venue under 18 U.S.C. § 3238, which provides that “[t]he trial of all offenses begun or committed upon the high seas ... shall be in the district in which the offender, or any one of two or more joint offenders, is arrested or is first brought.”
At the conclusion of an eleven-day trial, conducted between November 9 and 24, 2010, the jury returned separate verdicts of guilty against all defendants on all counts. The sentencing hearing took place on March 14, 2011, and final judgments were entered on March 18, 2011. The district court dismissed Count Thirteen for being multiplicitous with Count Twelve, and sentenced each of the defendants to life plus eighty years (960 months) on the remaining convictions. Specifically, the court imposed mandatory life sentences for the Count One piracy offense; concurrent sentences of 120 months each on Counts Two, Five, and Six, and of 240 months *451 each on Counts Three, Four, Seven, Eight, Nine, and Fourteen; plus consecutive sentences of 300 months each on Counts Ten and Eleven, and of 360 months on Count Twelve. The defendants have timely noted their appeals, and we possess jurisdiction pursuant to 28 U.S.C. § 1291 and 18 U.S.C. § 3742(a).
II.
In these consolidated appeals, the defendants first contend that their ill-fated attack on the USS Nicholas did not constitute piracy under 18 U.S.C. § 1651, which provides in full:
Whoever, on the high seas, commits the crime of piracy as defined by the law of nations, and is afterwards brought into or found in the United States, shall be imprisoned for life.
According to the defendants, the crime of piracy has been narrowly defined for purposes of § 1651 as robbery at sea, i.e., seizing or otherwise robbing a vessel. Because they boarded the Nicholas only as captives and indisputably took no property, the defendants contest their convictions on Count One, as well as the affixed life sentences.
A.
The defendants’ piracy contention is one that they unsuccessfully presented at multiple stages of the district court proceedings. Prior to their trial, the defendants moved to dismiss Count One under Rule 12 of the Federal Rules of Criminal Procedure. By its published opinion of October 29, 2010, the district court denied relief, premised on its determination that the Indictment “set forth facts that are sufficient, if proven true, to constitute the crime of piracy as defined by the law of nations, in violation of 18 U.S.C. § 1651.”
United States v. Hasan,
During the trial, at the close of the government’s case-in-chief, Hasan renewed his motion to dismiss Count One, which the district court denied from the bench. The court also rejected the defendants’ proposed jury instruction delineating the elements of the Count One piracy offense, in favor of an instruction consistent with its Hasan I opinion. Finally, following the trial, four of the defendants moved under Federal Rule of Criminal Procedure 29 for judgments of acquittal on Count One; the court denied those motions by its unpublished opinion of March 9, 2011. See United States v. Hasan, No. 2:10-cr-00056, slip op. at 2 (E.D.Va. Mar. 9, 2011) (“Hasan II ”). 4
1.
The
Hasan I
opinion was issued on the heels of the August 17, 2010 published opinion in
United States v. Said,
As the Said court recognized, article I of the Constitution accords Congress the power “[t]o define and punish Piracies and Felonies committed on the high Seas, and Offences against the Law of Nations.” U.S. Const, art. I, § 8, cl. 10 (the “Define and Punish Clause”). In its present form, the language of 18 U.S.C. § 1651 can be traced to an 1819 act of Congress, which similarly provided, in pertinent part:
That if any person or persons whatsoever, shall, on the high seas, commit the crime of piracy, as defined by the law of nations, and such offender or offenders, shall afterwards be brought into or found in the United States, every such offender or offenders shall, upon conviction thereof, ... be punished....
See Act of Mar. 3, 1819, ch. 77, § 5, 3 Stat. 510, 513-14 (the “Act of 1819”). Whereas today’s mandatory penalty for piracy is life imprisonment, however, the Act of 1819 commanded punishment “with death.” Id. at 514. Examining the Act of 1819 in its United States v. Smith decision of 1820, the Supreme Court recognized:
There is scarcely a writer on the law of nations, who does not allude to piracy, as a crime of a settled and determinate nature; and whatever may be the diversity of definitions, in other respects, all writers concur, in holding, that robbery, or forcible depredations upon the sea, animo furandi, 6 is piracy.
Invoking the principle that a court “must interpret a statute by its ordinary meaning at the time of its enactment,” the
Said
court deemed
Smith
to be the definitive authority on the meaning of piracy under 18 U.S.C. § 1651.
See Said,
The
Said
court also reviewed the legislative history of § 1651 and detected no congressional modifications to
Smith’s
definition of piracy.
See Said,
Additionally, the Said court discerned support for a static definition of piracy under § 1651 from the existence of the statute criminalizing an attack to plunder a vessel, 18 U.S.C. § 1659, which provides:
Whoever, upon the high seas or other waters within the admiralty and maritime jurisdiction of the United States, by surprise or open force, maliciously attacks or sets upon any vessel belonging to another, with an intent unlawfully to plunder the same, or to despoil any owner thereof of any moneys, goods, or merchandise laden on board thereof, shall be fined under this title or imprisoned not more than ten years, or both.
The court perceived that, because § 1659 targets “exactly the conduct charged against [the
Said
defendants] of shooting at the USS Ashland with an AK-47 rifle,” it would be rendered redundant by extending the meaning of piracy under § 1651 to include that same violent conduct.
See Said,
Finally, although the
Said
court acknowledged contemporary international law sources defining piracy to encompass the
Said
defendants’ violent conduct, the court deemed such sources to be too “unsettled” to be authoritative.
See Said,
2.
Here, the district court took a different tack, as laid out in its sweeping Hasan I opinion denying these defendants’ pretrial motion to dismiss the Count One piracy charge from their Indictment. That is, the court focused on piracy’s unusual status as a crime defined by the law of nations and subject to universal jurisdiction.
a.
The district court began by recognizing that, “[f]or centuries, pirates have been universally condemned as
hostis humani generis
— enemies of all mankind — because they attack vessels on the high seas, and thus outside of any nation’s territorial jurisdiction, ... with devastating effect to global commerce and navigation.”
Hasan I,
The district court perceived that, by nonetheless including “Piracies” in the Define and Punish Clause, the Framers distinguished that crime from “Felonies committed on the high Seas” and “Offences against the Law of Nations” — a sensible distinction to make in light of what would have been known to the Framers: “that piracy on the high seas was a unique offense because it permitted nations to invoke universal jurisdiction, such that any country could arrest and prosecute pirates in its domestic courts, irrespective of the existence of a jurisdictional nexus.”
Hasan I,
*455
With that history in mind, the district court recognized that the Define and Punish Clause “accords to Congress the special power of criminalizing piracy in a manner consistent with the exercise of universal jurisdiction.”
Hasan I,
The district court elucidated that, in the absence of federal common law power to apply the law of nations, “Congress had to enact a municipal law that adequately embodied the international crime of piracy,” requiring legislation “that was broad enough to incorporate the definition of piracy under the law of nations (and, in so doing, invoke universal jurisdiction) but narrow enough to exclude conduct that was beyond the scope of that definition.”
Hasan I,
Within a year of
Palmer,
as the district court recounted, “Congress passed the Act of 1819 to make clear that it wished to proscribe not only piratical acts that had a nexus to the United States, but also piracy as an international offense subject to universal jurisdiction.”
Hasan I,
The district court observed that Chapter 81 of Title 18, entitled “Piracy and Privateering,” contains not only § 1651, but also other provisions condemning acts of piracy.
See Hasan I,
b.
The district court in
Hasan I
astutely traced the meaning of “piracy” under the law of nations, from the time of the Act of 1819 to the modern era and the crime’s codification at 18 U.S.C. § 1651. The court commenced with the Supreme Court’s 1820 decision in
United States v. Smith,
relating that Justice Story easily concluded that “the Act of 1819 ‘sufficiently and constitutionally’ defined piracy by expressly incorporating the definition of piracy under the law of nations.”
See Hasan I,
Having noted that “[n]o other Supreme Court decision since
Smith
has directly addressed the definition of general piracy,” and recognizing the necessity of looking to
*457
foreign sources to determine the law of nations, the district court then focused on case law from other countries.
See Hasan I,
Though with no intent to disturb that judgment, the Privy Council revisited the issue upon referral from “His Majesty in Council.” See In re Piracy Jure Gentium, [1934] A.C. at 588 (“The decision of the Hong Kong court was final and the present proceedings are in no sense an appeal from that Court, whose judgment stands.”). The precise question before the Privy Council was ‘“whether actual robbery is an essential element of the crime of piracy jure gentium, or whether a frustrated attempt to commit a piratical robbery is not equally piracy jure gentium.’ ” Id. Significantly, the Privy Council answered: “ ‘Actual robbery is not an essential element in the crime of piracy jure gentium. A frustrated attempt to commit a piratical robbery is equally piracy jure gentium.’ ” Id.
In so ruling, the Privy Council consulted a multitude of domestic and foreign authorities, including our Supreme Court’s decision in
Smith. See In re Piracy Jure Gentium,
[1934] A.C. at 596-97. Rather than construing
Smith
to provide an “exhaustive” definition of piracy by equating it with robbery at sea, the Privy Council declared
Smith’s
piracy definition “unimpeachable as far as it goes,” but confined “to the facts under consideration.”
Id.
at 596 (“He would be a bold lawyer to dispute the authority of [Justice Story], but the criticism upon
[Smith’s
delineation of piracy] is that the learned judge was considering a case where ... [t]here was no doubt about the robbery....”). Moreover, the Privy Council recognized that, while
Smith
is “typical” of authorities suggesting “that robbery is an essential ingredient of piracy,” more recent cases compel “the opposite conclusion.”
Id.
at 197. For example, the Privy Council cited
The Ambrose Light,
In addition to the Privy Council’s
In re Piracy Jure Gentium
decision, the district court in
Hasan I
examined Kenya’s 2006
Republic v. Ahmed
prosecution of “ten Somali suspects captured by the United States Navy on the high seas” — “[t]he most recent case on [general piracy] outside the United States of which [the district court was] aware.”
See Hasan I,
As detailed in
Hasan I,
“there are two prominent international agreements that have directly addressed, and defined, the crime of general piracy.”
See
[p]iracy consists of any of the following acts:
(1) Any illegal acts of violence, detention or any act of depredation, committed for private ends by the crew or the passengers of a private ship or a private aircraft, and directed:
(a) On the high seas, against another ship or aircraft, or against persons or property on board such ship or aircraft;
(b) Against a ship, aircraft, persons or property in a place outside the jurisdiction of any State;
(2) Any act of voluntary participation in the operation of a ship or of an aircraft with knowledge of facts making it a pirate ship or aircraft;
(3) Any act of inciting or of intentionally facilitating an act described in sub-paragraph 1 or subparagraph 2 of this article.
*459 Geneva Convention on the High Seas, art. 15, opened for signature Apr. 29, 1958, 13 U.S.T. 2312, 450 U.N.T.S. 11 (entered into force Sept. 30, 1962).
The second pertinent treaty is the United Nations Convention on the Law of the Sea (the “UNCLOS”), which has amassed 162 parties since 1982 — albeit not the United States, which has not ratified the UNCLOS “but has recognized that its baseline provisions reflect customary international law.”
See United States v. Alaska,
(a) any illegal acts of violence or detention, or any act of depredation, committed for private ends by the crew or the passengers of a private ship or a private aircraft, and directed:
(i) on the high seas, against another ship or aircraft, or against persons or property on board such ship or aircraft;
(ii) against a ship, aircraft, persons or property in a place outside the jurisdiction of any State;
(b) any act of voluntary participation in the operation of a ship or of an aircraft with knowledge of facts making it a pirate-ship or aircraft;
(c) any act of inciting or of intentionally facilitating an act described in sub-paragraph (a) or (b).
U.N. Convention on the Law of the Sea, art. 101,
opened for signature
Dec. 10, 1982, 1833 U.N.T.S. 397 (entered into force Nov. 16, 1994). Upon comparing the High Seas Convention with the UNCLOS, the district court in
Hasan I
recognized that the latter treaty “defines piracy in exactly the same terms as the [former agreement], with only negligible stylistic changes.”
See
c.
Turning to the contentions of the parties herein, the district court related the defendants’ position “that the authoritative definition of piracy under the law of nations, and thus within the meaning of 18 U.S.C. § 1651, is provided by the Supreme Court’s decision in
Smith.” Hasan I,
First, the district court interpreted 18 U.S.C. § 1651 as an unequivocal demonstration of congressional intent “to incorporate ... any subsequent developments in the definition of general piracy under the law of nations.”
Hasan I,
The plain language of 18 U.S.C. § 1651 reveals that, in choosing to define the international crime of piracy by [reference to the “law of nations”], Congress made a conscious decision to adopt a flexible — but at all times sufficiently precise — definition of general piracy that would automatically incorporate developing international norms regarding piracy. Accordingly, Congress necessarily left it to the federal courts to determine the definition of piracy under the law of nations based on the international consensus at the time of the alleged offense.
Id.
(citing
Ex parte Quirin,
*461
“Having concluded that Congress’s proscription of ‘piracy as defined by the law of nations’ in 18 U.S.C. § 1651 necessarily incorporates modern developments in international law,” the district court next endeavored to “discern the definition of piracy under the law of nations at the time of the alleged offense in April 2010.”
Hasan I,
As of April 1, 2010, the law of nations, also known as customary international law, defined piracy to include acts of violence committed on the high seas for private ends without an actual taking. More specifically, ... the definition of general piracy under modern customary international law is, at the very least, reflected in Article 15 of the 1958 High Seas Convention and Article 101 of the 1982 UNCLOS.
Id.
at 632-33;
see also id.
at 630 (“Today, ‘the law of nations has become synonymous with the term “customary international law,” which describes the body of rules that nations in the international community universally abide by, or accede to, out of a sense of legal obligation and mutual concern.’ ” (quoting
Vietnam Ass’n for Victims of Agent Orange v. Dow Chem. Co.,
In the course of its discussion of the High Seas Convention and the UNCLOS, the district court recognized that “ ‘[Urea-ties are proper evidence of customary international law because, and insofar as, they create legal obligations akin to contractual obligations on the States parties to them.’ ”
Hasan I,
There were 63 states parties to the High Seas Convention as of June 10, 2010, including the United States, and there were 161 states parties to UNC- *462 LOS (including the European Union) as of October 5, 2010, including Somalia. The 161 states parties to UNCLOS represent the “overwhelming majority” of the 192 Member States of the United Nations, and the 194 countries recognized by the United States Department of State. UNCLOS’s definition of piracy therefore represents a widely accepted norm, followed out of a sense of agreement (or, in the case of the states parties, treaty obligation), that has been recognized by an overwhelming majority of the world.
The status of UNCLOS as representing customary international law is enhanced by the fact that the states parties to it include all of the nations bordering the Indian Ocean on the east coast of Africa, where the incident in the instant case is alleged to have taken place: South Africa, Mozambique, Tanzania, Kenya, and Somalia. See Kiobel,621 F.3d at 137-38 (noting that a treaty’s evidentiary value for assessing customary international law depends on the number of parties and the parties’ relative influence on the international issue). Also significant in determining whether UNCLOS constitutes sufficient proof of a norm of customary international law is the fact that both the United States and Somalia, two countries that clearly have an influence on the piracy issue, have each ratified, and thus accepted, a treaty containing the exact same definition of general piracy.
Moreover, although the definition of general piracy provided by the High Seas Convention and UNCLOS is not nearly as succinct as “robbery on the sea,” the definitions are not merely general aspirational statements, but rather specific enumerations of the elements of piracy reflecting the modern consensus view of international law. Accordingly, UNCLOS’s definition of general piracy has a norm-creating character and reflects an existing norm of customary international law that is binding on even those nations that are not a party to the Convention, including the United States.
Hasan I,
*463
The district court further observed “that UNCLOS does not represent the first time that acts of violence have been included in the definition of general piracy.”
Hasan I,
This actual state practice by Kenya, the country currently most involved in prosecuting piracy, as well as the active support of such practice by other nations, which continue to bring other alleged pirates to Kenya for prosecution, is indicative of the fact that the definition of piracy contained in the High Seas Convention and UNCLOS have attained the status of a binding rule of customary international law.
Hasan I,
Significantly, the district court rejected the defendants’ contention — endorsed by the
Said
court — that the piracy statute, 18 U.S.C. § 1651, “cannot be read to include mere acts of violence committed in an effort to rob another vessel on the high seas, because doing so would render ... superfluous” the attack-to-plunder-a-vessel statute, 18 U.S.C. § 1659.
See Hasan I,
The
Hasan I
opinion further rejected the Said-approved theory “that applying
*464
the contemporary customary international law definition of general piracy violates fundamental due process protections.”
See Hasan I,
[I]n order for a definition of piracy to fall within the scope of § 1651, the definition must ... be sufficiently established to become customary international law. Importantly, the high hurdle for establishing customary international law, namely the recognition of a general and consistent practice among the overwhelming majority of the international community, necessarily imputes to Defendants fair warning of what conduct is forbidden under § 1651. Such general and consistent practice is certainly reflected by the fact that an overwhelming majority of countries have ratified UNC-LOS, which reflects the modern definition of general piracy. Just as the Supreme Court found in Smith that the definition of piracy was readily ascertainable, it is apparent today that UNC-LOS (to which Somalia acceded in 1989, over twenty years ago) reflects the definitive modern definition of general piracy under customary international law. In fact, while the Court recognizes the difference between imputed and actual notice for due process purposes, it is far more likely that the Defendants, who claim to be Somali nationals, would be aware of the piracy provisions contained in UNCLOS, to which Somalia is a party, than of Smith, a nearly two hundred year-old case written by a court in another country literally half a world away.
Hasan I,
d.
For its final
Hasan I
undertaking, the district court measured the Count One piracy charge in the defendants’ Indictment against “the statutory requirements set forth in 18 U.S.C. § 1651,” including “the necessarily incorporated elements of general piracy established by customary international law.”
Hasan I,
The district court then reaffirmed that, as of the alleged offense date of April 2010,
*465
the definition of piracy under the law of nations was found in the substantively identical High Seas Convention and UNC-LOS, the latter having “been accepted by the overwhelming majority of the world as reflecting customary international law.”
Hasan I,
(A) (1) any illegal act of violence or detention, or any act of depredation; (2) committed for private ends; (3) on the high seas or a place outside the jurisdiction of any state; (4) by the crew or the passengers of a private ship ...; (5) and directed against another ship ..., or against persons or property on board such ship ...; or
(B) (1) any act of voluntary participation in the operation of a ship ...; (2) with knowledge of the facts making it a pirate ship; or
(C) (1) any act of inciting or of intentionally facilitating (2) an act described in subparagraph (A) or (B).
Id. at 640-41 (footnotes omitted).
The district court concluded that defendants Ali and Dire were adequately charged in Count One under subparagraph (A), in that the Indictment alleged “that, while on the high seas, they boarded an assault boat, cruised towards the USS Nicholas, and opened fire upon the Navy frigate with AK-47s.”
Hasan I,
3.
Faithful to its Hasan I opinion, the district court instructed the jury on Count One, over the defendants’ objection,
that the Law of Nations defines the crime of piracy to [include] any of the three following actions:
(A) any illegal acts of violence or detention or any act of depredation committed for private ends on the high seas or a place outside the jurisdiction of any state by the crew or the passengers of a private ship and directed against another ship or against persons or property on board such ship; or
(B) any act of voluntary participation in the operation of a ship with knowledge of facts making it a pirate ship; or
(C) any act of inciting or of intentionally facilitating an act described in (A) or (B) above.
Excerpt of Proceedings (Jury Instructions) at 18-19, United States v. Hasan, No. 2:10-cr-00056 (E.D.Va. Nov. 22, 2010; filed July 28, 2011), ECF No. 356. The court also specified “that an assault with a firearm as alleged in the indictment in this case, if proven beyond a reasonable doubt, *466 is an illegal act of violence.” Id. at 19. 13 The jury found each of the defendants guilty of the Count One piracy offense by a general verdict.
Rebuffing the post-trial entreaties for judgments of acquittal on Count One, the district court observed in its Hasan II opinion of March 9, 2011, that it was being asked to “reconsider its decision regarding the definition of ‘piracy,’ as used in 18 U.S.C. § 1651, in light of a Congressional Research Service (‘CRS’) report entitled Piracy: A Legal Definition. ” See Hasan II, slip op. at 3. The CRS report was issued on October 19, 2010 — just ten days prior to the filing of Hasan I — and had not been considered by the district court in rendering that earlier decision. See id. at 3-4 & n. 1 (attributing its non-contemplation of the CRS report to the fact that such “reports, though public domain materials, are generally not made directly available to the public [or] to the federal courts[,] but instead only become public when released by a member of Congress”). In any event, the court deemed the CRS report unhelpful to the defendants, explaining:
[T]he report does not appear to contain discussion of any relevant historical precedent that was not also discussed by the Court in its [Hasan I opinion]. Neither does the report appear to contain any original substantive legal analysis regarding the proper definition of piracy under the law of nations. Instead, the report merely discusses the fact that “[a] recent development in a piracy trial in federal court in Norfolk, VA” — namely, the decision in United States v. Said, [757 F.Supp.2d 554 (E.D.Va.2010) ]— “has highlighted a potential limitation in the definition of piracy under the United States Code.”
Id. at 4 (quoting R. Chuck Mason, Cong. Research Serv., R41455, Piracy: A Legal Definition summ. (Oct. 19, 2010)). Because the court “was, of course, well aware of the decision in Said when it issued its [Hasan I opinion],” it concluded that the CRS report “provide[d] no basis for [reconsideration of] the definition of piracy under the law of nations as used in 18 U.S.C. § 1651.” Id. at 4-5. 14 Having found no meritorious premise for relief, the court validated the defendants’ Count One piracy convictions. See id. at 5-6,16-17.
B.
On appeal, the defendants maintain that the district court erred with respect to Count One both by misinstructing the jury on the elements of the piracy offense, and in refusing to award post-trial judgments of acquittal. Each aspect of the defendants’ position obliges us to assess whether the court took a mistaken view of 18 U.S.C. § 1651 and the incorporated law of nations.
See United States v. Kellam,
Simply put, we agree with the conception of the law outlined by the court below. Indeed, we have carefully considered the defendants’ appellate contentions — endorsed by the amicus curiae brief submitted on their behalf, see supra note 5 — yet remain convinced of the correctness of the trial court’s analysis.
The crux of the defendants’ position is now, as it was in the district court, that the definition of general piracy was fixed in the early Nineteenth Century, when Congress passed the Act of 1819 first authorizing the exercise of universal jurisdiction by United States courts to adjudicate charges of “piracy as defined by the law of nations.” Most notably, the defendants assert that the “law of nations,” as understood in 1819, is not conterminous with the “customary international law” of today. The defendants rely on Chief Justice Marshall’s observation that “[t]he law of nations is a law founded on the great and immutable principles of equity and natural justice,”
The Venus,
The defendants’ view is thoroughly refuted, however, by a bevy of precedent, including the Supreme Court’s 2004 decision in Sosa v. Alvarez-Machain. See supra note 11. The Sosa Court was called
upon to determine whether Alvarez could recover under the Alien Tort Statute, 28 U.S.C. § 1350 (the “ATS”), for the U.S. Drug Enforcement Administration’s instigation of his abduction from Mexico for criminal trial in the United States.
See
Although, as the defendants point out, the ATS involves civil claims and the general piracy statute entails criminal prosecutions, there is no reason to believe that the “law of nations” evolves in the civil context but stands immobile in the criminal context. Moreover, if the Congress of *468 1819 had believed either the law of nations generally or its piracy definition specifically to be inflexible, the Act of 1819 could easily have been drafted to specify that piracy consisted of “piracy as defined on March 3, 1819 [the date of enactment], by the law of nations,” or solely of, as the defendants would have it, “robbery upon the sea.” The government helpfully identifies numerous criminal statutes “that incorporate a definition of an offense supplied by some other body of law that may change or develop over time,” see Br. of Appellee 18 (citing, inter alia, 16 U.S.C. § 3372(a)(2)(A) (the Lacey Act, prohibiting commercial activities involving “any fish or wildlife taken, possessed, transported, or sold in violation of any law or any regulation of any State or in violation of any foreign law”)); that use the term “as defined by” or its equivalent to “incorporate definitions that are subject to change after statutory enactment,” see id. at 19 (citing, e.g., 18 U.S.C. § 1752(b)(1)(B) (prescribing punishment for illegal entry into White House or other restricted buildings or grounds where “the offense results in significant bodily injury as defined by [18 U.S.C. § 2118(e)(3) ]”)); and that explicitly “tie the statutory definition to a particular time period,” see id. at 21 (citing 22 U.S.C. § 406 (exempting from statutory limitations on the export of war materials “trade which might have been lawfully carried on before the passage of this title [enacted June 15,1917], under the law of nations, or under the treaties or conventions entered into by the United States, or under the laws thereof’)). Additionally, the government underscores that Congress has explicitly equated piracy with “robbery” in other legislation, including the Act of 1790 that failed to define piracy as a universal jurisdiction crime.
For their part, the defendants highlight the Assimilated Crimes Act (the “ACA”) as a statute that expressly incorporates state law “in force at the time of [the prohibited] act or omission.”
See
18 U.S.C. § 13(a). That reference was added to the ACA, however, only after the Supreme Court ruled that a prior version was “limited to the laws of the several states in force at the time of its enactment,”
United States v. Paul,
Additional theories posited by the defendants of a static piracy definition are no more persuasive. For example, the defendants contend that giving “piracy” an evolving definition would violate the principle that there are no federal common law crimes.
See
Br. of Appellants 32 (citing
United States v. Hudson,
The defendants would have us believe that, since the
Smith
era, the United States’ proscription of general piracy has been limited to “robbery upon the sea.” But that interpretation of our law would render it incongruous with the modern law
*469
of nations and prevent us from exercising universal jurisdiction in piracy cases.
See Sosa,
We also agree with the district court that the definition of piracy under the law of nations, at the time of the defendants’ attack on the USS Nicholas and continuing today, had for decades encompassed their violent conduct. That definition, spelled out in the UNCLOS, as well as the High Seas Convention before it, has only been reaffirmed in recent years as nations around the world have banded together to combat the escalating scourge of piracy. For example, in November 2011, the United Nations Security Council adopted Resolution 2020, recalling a series of prior resolutions approved between 2008 and 2011 “concerning the situation in Somalia”; expressing “grave[] concerní] [about] the ongoing threat that piracy and armed robbery at sea against vessels pose”; and emphasizing “the need for a comprehensive response by the international community to repress piracy and armed robbery at sea and tackle its underlying causes.” Of the utmost significance, Resolution 2020 reaffirmed “that international law, as reflected in the [UNCLOS], sets out the legal framework applicable to combating piracy and armed robbery at sea.” 15 Because the district court correctly applied the UNCLOS definition of piracy as customary international law, we reject the defendants’ challenge to their Count One piracy convictions, as well as their mandatory life sentences.
III.
The defendants raise several additional appellate contentions, which we are also content to reject.
A.
First, the defendants contend that the district court erroneously denied their individual motions to suppress statements they made on April 4, 2010, when questioned aboard the USS Nicholas three days after their capture. They assert that the interviews contravened the Fifth Amendment, because the investigators failed to adequately advise them of their right to counsel, and did not obtain knowing and intelligent waivers of their rights to counsel and to remain silent before soliciting their statements. Of course, under Miranda v. Arizona, a suspect in custody
must be warned prior to any questioning that he has the right to remain silent, that anything he says can be used against him in a court of law, that he has the right to the presence of an attorney, and that if he cannot afford an attorney one will be appointed for him prior to any questioning if he so desires.
1.
The district court conducted a pretrial evidentiary hearing concerning the defendants’ suppression motions on September 10-11, 2010, and denied the motions by its published opinion of October 29, 2010.
See United States v. Hasan,
On April 4, 2010, Naval Criminal Investigative Service (“NCIS”) Special Agent Michael Knox, accompanied by NCIS Special Agent Theodore Mordecai and interpreter Aziz Ismail, questioned the five defendants — Dire, Ali, Umar, Gurewardher, and Hasan — aboard the USS Nicholas.
See Hasan III,
The defendants were brought on April 4, 2010, to the centerline passageway of the USS Nicholas, where they were interviewed first individually and then as a group.
See Hasan III,
According to Special Agent Knox, he advised each defendant “‘that they have the right to remain silent; that at any time they could ... request to be taken back to their holding area[;] and ... that if they wanted a lawyer, we would give them one.’ ”
Hasan III,
Other government witnesses, including Special Agent Mordecai and interpreter Ismail, “all corroborated the fact that Special Agent Knox administered warnings to Defendants, although their recollections of the warnings varied slightly.”
Hasan III,
2.
Evaluating the evidence before it, the district court found “that Special Agent Knox did, in fact, administer the warnings he recalled to each of the Defendants at the beginning of each of their interviews on April 4, 2010.”
Hasan III,
The district court deemed it a closer question whether the defendants — being “non-English speaking and illiterate Somali nationals, without any connection to the United States” — could have “knowingly and intelligently waived their Fifth Amendment rights against self-incrimination.”
See Hasan III,
*472 [T]he evidence before the Court indicates that Special Agent Knox did, in fact, ask each Defendant if he understood the rights that had just been given to him. Although the testimony diverges as to the precise nature of Defendants’ response — Special Agents Knox and Mordecai recalled only nodding and/or the lack of any indication of not understanding, whereas [interpreter] Ismail recalls each Defendant verbally saying ‘Tes” in Somali — the testimony is uniform in suggesting understanding, as opposed to lack thereof, on the part of Defendants. Ultimately, Defendants were adequately warned of their rights against self-incrimination under the Fifth Amendment in accordance with the requirements of Miranda. The Miranda rights were recited to Defendants, through Ismail, ... in their native language. At no point did Defendants claim that they did not understand the words being recited by Ismail, or that Ismail was not speaking their native language or dialect. Moreover, during the entire interview process, Defendants were awake, alert, drug-free, and engaged.
Of course, whether Defendants actually understood their Fifth Amendment rights against self-incrimination remains a somewhat close question. Defendants argue that their upbringing in a country that has become increasingly lawless in recent decades rendered them incapable of understanding the Miranda rights recited. ...
Nevertheless, it appears ... that the inquiry as to whether a defendant understood the recitation of the Fifth Amendment rights focuses not on the defendant’s understanding of the U.S. criminal justice system, the democratic form of government, and/or the concept of individual rights, but rather on whether the defendant could, merely as a linguistic matter, comprehend the words spoken to him.
Although Defendants have asserted through counsel that they are illiterate, there is no evidence showing them to be of below-average intelligence or to suffer from any mental disabilities. Accordingly, although Defendants may have a hard time understanding the notion of individual rights such as those guaranteed by the Fifth Amendment, that does not mean that they could not have or did not understand their options upon Special Agent Knox’s recitation of the Miranda warnings and the “cleansing statement.” Even assuming that Defendants may not have grasped the nature and processes of the United States judicial system — which would admittedly appear to be a rather fair assumption in this case, based on the limited record before the Court — they nevertheless must have understood, from the translated words uttered by Special Agent Knox alone, that they did not have to speak with him, and that they could request counsel. Needless to say, despite current conditions in Somalia, the concept of an attorney is not a foreign one there.
*473 3.
On appeal, the defendants contend that the district court erred in finding that Special Agent Knox’s warnings adequately advised them of their Fifth Amendment rights in accordance with Miranda. More specifically, they assert that the court could not determine the exact content of the warnings based on Knox’s testimony. The defendants further posit that the warnings were constitutionally deficient because Knox did not convey to them that they had a “right” to a lawyer; rather he stated “that if they wanted a lawyer, we would give them one.” J.A. 147. Even if the warnings comported with the Miranda requirements, however, the defendants insist that the district court was wrong in concluding that they could have knowingly and intelligently waived their rights. 19
In assessing the district court’s denial of the defendants’ suppression motions, we review the court’s factual findings for clear error and its legal determinations de novo.
See United States v. Holmes,
We perceive no clear error in the district court’s findings concerning the content of the
Miranda
warnings, in that the court reasonably accepted the testimony of Special Agent Knox. Although the court acknowledged that there were “slight variations in the recollections of the various witnesses,” it deemed “the testimony offered by the Government to be substantially consistent and credible.”
Hasan III,
We are further satisfied that the district court committed no legal error in concluding that Special Agent Knox’s warnings sufficiently advised the defendants of their right to counsel. Again, the court found that Knox advised the defendants “ ‘that if they wanted a lawyer, we would give them one.’ ”
Hasan III,
Put succinctly, Special Agent Knox was not obligated to actually verbalize the phrase “right to a lawyer” when his warning “effectively convey[ed] the same meaning.”
See United States v. Sanchez,
The defendants persist that their statements should have been suppressed regardless of the adequacy of the Miranda warnings, because they could not have validly waived their Fifth Amendment rights against self-incrimination. That is, the defendants maintain that any waiver of their rights was not knowing and intelligent because of the language barrier, their unfamiliarity with the American legal system, the social and political conditions in their native Somalia, and their illiteracy and overall lack of education.
For a waiver to be knowing and intelligent, it “must have been made with a full awareness of both the nature of the right being abandoned and the consequences of the decision to abandon it.”
Moran v. Burbine,
The district court found that there was “no evidence showing [the defendants] to be of below-average intelligence or to suffer from any mental disabilities.”
Hasan III,
We think the district court made a “fair assumption” that the defendants “may not have grasped the nature and processes of the United States judicial system.”
Hasan III,
Next, defendant Hasan maintains that the district court erred in denying his motion to dismiss the Indictment’s charges against him pursuant to the Juvenile Delinquency Act, 18 U.S.C. §§ 5031-5042 (the “JDA”), on the ground that the government failed to establish that he was at least eighteen years of age at the time of his alleged offenses.
21
The court rejected Hasan’s JDA contention by the pretrial
Hasan III
opinion of October 29, 2010.
See
In doing so, the district court placed on the government ‘“the initial burden of proving [Hasan’s] age,’ ” thereby requiring the government to “ ‘offer prima facie evidence of [his] adult status.’ ”
See Hasan III,
Resolving conflicting testimony, the district court found that Hasan told “Special Agents Knox and Mordecai during the April 4, 2010 interview that he was (or believed himself to be) between 24 and 26 years old.”
Hasan III,
The credibility of [Hasan’s] testimony [that he did not know the day or year of his birth but had been told by unnamed neighbors that he was eighteen years old] was questionable, and he testified that he could produce no corroborating documentary evidence or testimony from others. Although Hasan’s lack of knowledge about his own birth date or birth year is rendered less surprising and/or suspect by the testimony of [interpreter] Ismail [that most Somalis do not know their exact birth date, but generally know their birth year], Hasan’s testimony nevertheless contradicted itself as much as it did the testimony of Special Agents Knox and Mordecai.
Id. at 676-77 (footnote omitted). In the end, the court found — “[b]ased on [its] observation of Hasan during his testimony, as well as on the content of that testimony” — that Hasan’s “self-serving testimony that he is currently only 18 years old” was not credible and deserved little weight. Id. at 677.
Without contesting the district court’s use of the burden-shifting scheme to establish his age, Hasan asserts on appeal that the court erroneously accepted the “contradictory and vague testimony” of Special Agents Knox and Mordecai in satisfaction of the government’s prima facie showing.
See
Br. of Appellants 50. We disagree. The court reasonably observed that, “[although the agents’ notes and testimony varied slightly from each other, the variance was effectively explained” and “nowhere in their notes or testimony is there any suggestion whatsoever that Hasan told them he was under the age of 18.”
Hasan III,
C.
Lastly, the defendants fault the district court for declining to merge, for sentencing purposes, their three convictions under 18 U.S.C. § 924(c) — Counts Ten through Twelve — into a single § 924(c) offense. The defendants were convicted for their use of the two AK-47s in Counts Ten and Eleven under 18 U.S.C. § 924(c)(l)(A)(iii), which provides in pertinent part that “any person who, during and in relation to any crime of violence ... for which the person may be prosecuted in a court of the United States, uses or car *477 ries a firearm ... shall ... if the firearm is discharged, be sentenced to a term of imprisonment of not less than 10 years.” Count Twelve was aimed at the defendants’ use of the RPG and charged under § 924(c)(1)(A) and (c)(l)(B)(ii), mandating a sentence of “not less than 30 years” for use of a destructive device in relation to a crime of violence.
Significantly, the district court considered Count Twelve to be the first conviction under § 924(c), and Counts Ten and Eleven to be second or subsequent § 924(c) convictions, thus subjecting the defendants to minimum twenty-five-year sentences on Counts Ten and Eleven under § 924(e)(l)(C)(i) (“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____”). And, following the directive of § 924(c)(l)(D)(ii), the court ordered consecutive sentences for the § 924(c) convictions — twenty-five years (300 months) each on Counts Ten and Eleven, plus thirty years (360 months) on Count Twelve.
Notwithstanding the defendants’ contentions to the contrary, we conclude that the district court imposed proper sentences. Our precedent dictates the conclusion “that multiple, consecutive sentences under § 924(c)(1) are appropriate whenever there have been multiple, separate acts of firearm use or carriage,
even when all of those acts relate to a single predicate offense.” United States v. Lighty,
IV.
Pursuant to the foregoing, we affirm the convictions and sentences of each of the defendants.
AFFIRMED
Notes
. We recite the evidence in the light most favorable to the government, as the prevailing party at trial.
See United States v. Singh,
. Counts One through Three, Five through Eight, and Ten through Thirteen included allegations of aiding and abetting. See 18 U.S.C. § 2(a) ("Whoever commits an offense against the United States or aids, abets, counsels, commands, induces or procures its commission, is punishable as a principal.”).
. Dire, having been the first to file, is the lead defendant in these consolidated appeals, but Hasan was the first named defendant in the district court proceedings.
. Although the district court identified the four Rule 29 movants as Hasan, Gurewardher, Umar, and Ali, see Hasan II, slip op. at 3, the record reflects that they were Hasan, Gurewardher, Umar, and Dire. The Hasan II opinion is found at J.A. 1053-69. (Citations herein to "J.A._” refer to the contents of the Joint Appendix filed by the parties in these appeals.)
. We heard oral argument in the government’s interlocutory appeal from the
Said
opinion on March 25, 2011, and that same day ordered the parties to file supplemental briefs addressing the legal propriety of the procedure employed by the district court to dismiss the piracy count from the indictment. Thereafter, on April 20, 2011, we placed the
Said
appeal in abeyance pending our decision herein. Counsel for the
Said
defendants then submitted an amicus curiae brief in support of the defendants in this appeal. In tandem with today's decision, we are issuing a per curiam opinion vacating the
Said
opinion and remanding for further proceedings.
See United States v. Said,
. The Latin term "animo furandi ” means "with intention to steal." Black’s Law Dictionary 87 (6th ed.1990).
. In concluding that the definition of piracy under 18 U.S.C. § 1651 has remained unchanged since the Supreme Court disposed of
Smith
in 1820, the
Said
court cited only two modern decisions:
Taveras v. Taveraz,
. Notably, "the effectiveness of the Act of 1819 was limited in duration to just one year, requiring supplemental legislation to prevent its provisions from expiring.”
Hasan I,
. The Latin term "jure gentium " means "[b]y the law of nations.” Black’s Law Dictionary 852 (6th ed.1990). Thus, "piracy jure gentium " is another way of saying "general piracy.”
. As the district court explained, “[t]he Privy Council served, in part, as an appeals court from the local courts in the various colonies of the British Empire,” and “also reviewed disputed legal questions referred to it by the Crown and recommended resolutions for such questions.”
Hasan I,
. The district court noted that reading 18 U.S.C. § 1651 to require application of the contemporary definition of general piracy comports with both fundamental fairness and Supreme Court precedent. That is, it "would be fundamentally unfair” to "permit[] the prosecution of acts that have ceased to be violations of the law of nations” — such as acts occurring outside the three-mile boundary demarcating a nation’s territorial waters from the high seas in 1820, but within the twelve-mile boundary set by international law today.
See Hasan I,
. Expounding on the applicability of the UNCLOS herein, the district court observed:
The fact that the United States has not signed or ratified UNCLOS does not change the conclusion reached above regarding its binding nature. While the United States’ failure to sign or ratify UNCLOS does bar the application of UNCLOS as treaty law against the United States, it is not dispositive of the question of whether UNCLOS constitutes customary international law, because such a determination relies not only on the practices and customs of the United States, but instead of the entire international community. In any event, while the United States has refused to sign UNCLOS because of ... regulations related to deep seabed exploration and mining, in 1983, President Ronald Reagan announced that the United States would accede to those provisions of UNCLOS pertaining to "traditipnal uses” of the ocean. Schoenbaum, supra, § 2-2 ("With respect to the ‘traditional uses' of the sea, therefore, the United States accepts [UNCLOS] as customary international law, binding upon the United States.”). No succeeding Presidential Administration has taken a contrary position. Accordingly, with the exception of its deep seabed mining provisions, the United States has consistently accepted UNCLOS as customary international law for more than 25 years. [See Restatement (Third) of the Foreign Relations Law of the United States pt. 5, intro, note (1986) ("For purposes of this Restatement, [the UNCLOS] as such is not law of the United States. However, many of the provisions of the [UNCLOS] follow closely provisions in the [High Seas Convention] to which the United States is a party and which largely restated customary law as of that time. [Moreover], by express or tacit agreement accompanied by consistent practice, the United States, and states generally, have accepted the substantive *463 provisions of the [UNCLOS], other than those addressing deep sea-bed mining, as statements of customary law binding upon them apart from the [UNCLOS].”) ].
Hasan I,
. The defendants proposed an instruction defining piracy as " ‘robbery, or forcible depredations upon the sea,’ ” and requiring the government to prove that, among other things, the defendants "took and carried away the personal goods of another." J.A. 585.
. It is noteworthy that the CRS report of October 19, 2010, was updated to include a discussion of the Hasan I opinion. See R. Chuck Mason, Cong. Research Serv., R41455, Piracy: A Legal Definition summ. (Dec. 13, 2010) (advising that "[t]he divergent U.S. district court rulings [in Said and Hasan I ] may create uncertainty in how the offense of piracy is defined”).
. Notably, as one of the permanent members of the Security Council, the United States supported the adoption of Resolution 2020, which was approved by a unanimous Security Council.
. For the sake of clarity, we acknowledge that the opinion defined herein as "Hasan III" was issued on the same day as the pretrial Hasan I opinion denying the defendants' joint motion to dismiss the Count One piracy charge. As such, Hasan III predates the Hasan II opinion withholding post-trial relief from the Count One convictions.
. The district court suppressed Gurewardher's April 2 confession because, on that date, "Special Agent Knox failed to advise him adequately of his Fifth Amendment rights, as required by
Miranda." See Hasan III,
. To constitute a valid waiver, the suspect’s rights must be relinquished not only "knowingly and intelligently,” but also "voluntarily.”
See Miranda,
. Because the government has not argued otherwise, we assume without deciding that the Fifth Amendment rights implicated by
Miranda
"apply even 'to the custodial interrogation of a foreign national outside the United States by [U.S.] agents ... engaged in a criminal investigation.’ ”
See Hasan III,
. Because the district court properly denied the suppression motions, we need not reach the defendants’ appellate contention that their convictions of the RPG-related offenses (Counts Twelve through Fourteen) cannot stand absent their April 4, 2010 statements. See Br. of Appellants 63-67.
. As we have explained, ‘‘[t]he primary purpose of the JDA is 'to remove juveniles from the ordinary criminal process in order to avoid the stigma of a prior criminal conviction and to encourage treatment and rehabilitation.’ ”
United States v. Blake,
