KOZINSKI, Circuit Judge:
Under 18 U.S.C. § 4246, an individual accused of federal crimes and found incompetent to stand trial may be committed indefinitely if his release would create a substantial risk of bodily injury to another or serious damage to property. We consider whether this statute violates the fifth and sixth amendment’s guarantees of equal protection, due process and trial by jury.
I
On September 18, 1987, John George Sahhar was indicted under 18 U.S.C. § 871(a) for making a threat against the President of the United States. At the government’s request, the district court held a competency hearing pursuant to 18 U.S.C. § 4241(a). The court found Sahhar incompetent to stand trial and ordered him committed to the custody of the Attorney General for evaluation and treatment in [1199]*1199accordance with section 4241(d). Findings & Order, Nov. 19, 1987.
The court held another competency hearing on July 29, 1988. Sahhar presented no evidence at the hearing. Dr. Donald R. Butts, the psychiatrist in charge of Sahhar’s evaluation and treatment at the Medical Center for Federal Prisoners in Springfield, Missouri, submitted a report concluding that Sahhar was a paranoid schizophrenic. Dr. Butts also testified that Sahhar was “in a neurotic psychiatric state and ... uncooperative, incoherent and very bellicose and threatening.” R.T. 7/29/88 at 19. According to Dr. Butts, Sahhar was “admitted to the most secure unit” at Springfield and placed “under very close observation ... for his own protection and for the protection of staff members.” Id. at 14. In spite of these measures, Sahhar was verbally abusive to staff members, id. at 24-25, tore up his cell, id. at 21, and on at least one occasion had to be placed in restraints. Id. at 19. Dr. Butts concluded that Sahhar was not competent to stand trial and unlikely to become so within a reasonable period of time. The district court found Dr. Butts’s testimony persuasive, see id. at 38-39, and recommitted Sahhar for further psychiatric evaluation.
Soon thereafter, the acting warden at the Federal Correctional Institution at Terminal Island, California filed a certificate requesting an involuntary commitment hearing pursuant to 18 U.S.C. § 4246(a). The court conducted a section 4246 hearing on October 13, 1988, at which the government submitted a report prepared by Dr. Jeanne Hetzel, Chief of Psychology Services at Terminal Island. Dr. Hetzel noted in her report that Sahhar was “overtly psychotic” and “hostile,” and had “attempt[ed] to assault staff and other inmates.” E.R. at 70. She concluded that Sahhar presented a substantial risk to others, and listed ten specific reasons for her conclusion, among them: Sahhar’s behavior appeared to be directed by aggressive and violent fantasies; he made no attempt to conform his behavior to acceptable norms; he had shown no guilt or acceptance of responsibility for his actions; he attempted to assault both staff and inmates; and there was.no indication that he would comply with outpatient treatment. E.R. at 70-71.
Dr. Hetzel also testified at length about Sahhar’s “aggressive behavior” while at Terminal Island, including numerous specific acts evincing his dangerousness. R.T. 11/13/88.1 Like Dr. Butts, she concluded that Sahhar suffered from paranoid schizophrenia, and was more likely to act aggressively than unaffected persons. Id. at 58. Dr. Hetzel stated that Sahhar’s refusal to take medication made treatment in a noncustodial setting infeasible. Id. at 19-22. While recognizing that some of Sahhar’s behavior appeared “clinically exaggerated” and that his “bark seemed to be much worse than his bite,” id. at 51-52, Dr. Hetzel found that defendant “presented a substantial risk to the safety of other people.” Id. at 15.
Sahhar presented no expert testimony or reports. The only witness he called was his father, George Sahhar, who testified that defendant had never assaulted him and that he did not believe his son was dangerous. George Sahhar did admit, however, to calling the police on at least one occasion when his son became angry, id. at 68, 70-71, and testified about three incidents where his son became angry in his presence: when Sahhar tried to throw a refrigerator at his brother, when he dropped a whiskey bottle to the floor and kicked a telephone because his father would not give him money, and when he broke a window by throwing a cup through it because his father again would not give him money.
[1200]*1200At the close of the hearing, the court found that Sahhar was suffering from a mental disease or defect and that his release would present a substantial risk of harm. The court then committed him to the Attorney General’s custody for hospitalization and, treatment in a suitable facility pursuant to 18 U.S.C. § 4246(d). The court further directed the Attorney General to seek a state placement for Sahhar and provide a report on his condition every six months. Sahhar currently is undergoing treatment at a state-operated facility in Arizona, but remains within the Attorney General’s jurisdiction.
II
Sahhar raises a number of constitutional challenges to his commitment under 18 U.S.C. § 4246: that it denies him equal protection by creating a different standard for commitment for those charged with federal crimes than for the general population; that it violates the fifth and sixth amendments by permitting commitment without a jury trial; and that it denies him due process by permitting commitment without specific findings that he had recently committed dangerous acts.2 Before we address the merits of these challenges, we consider briefly the statutory scheme under which federal criminal defendants may be subject to involuntary commitment.
The treatment of mentally incompetent federal criminal defendants is governed by 18 U.S.C. §§ 4241-4247. Of particular concern here are sections 4241 and 4246, providing for the treatment of persons found incompetent to stand trial. Section 4241(a) provides that whenever the court has reasonable cause to believe a defendant is suffering from a mental disease or defect rendering him unable to understand the nature and consequences of the proceedings against him or to assist properly in his defense, the court may conduct a hearing to determine the defendant’s competency. If the court finds by a preponderance of the evidence that the defendant is incompetent, it shall commit him to the custody of the Attorney General for treatment. 18 U.S.C. § 4241(d). The defendant may be hospitalized for a reasonable time, generally not to exceed four months, “to determine whether there is a substantial probability that in the foreseeable future he will attain the capacity to permit the trial to proceed.” 18 U.S.C. § 4241(d)(1). If at the end of this period the court determines that defendant’s mental condition has not improved sufficiently for trial to proceed, the defendant becomes subject to the provisions of section 4246. 18 U.S.C. § 4241(d).
Section 4246(a) authorizes the director of the facility in which the defendant is hospitalized to certify that (1) the defendant is “presently suffering from a mental disease or defect as a result of which his release would create a substantial risk of bodily injury to another person or serious damage to property of another” and (2) “suitable arrangements for State custody and care of the person are not available.” Upon the filing of such a certificate, the court holds a hearing to determine whether the person is dangerous as alleged. If the court finds by clear and convincing evidence that defendant’s condition satisfies the section 4246(a) criteria, it shall commit the defendant to the custody of the Attorney General pursuant to section 4246(d) until such time as (1) he no longer poses a substantial risk of harm or (2) a state assumes control over his treatment.
Ill
Sahhar first contends that 18 U.S.C. § 4246 denies him equal protection by creating an impermissible distinction between different persons who could be classified as dangerous and mentally ill: those who have been charged with federal crimes and those who have not.3 Dangerous, mentally [1201]*1201ill persons not charged with violating federal law are not subject to the provisions of section 4246 or any other federal commitment statute, although many states provide for their commitment. On the other hand, dangerous, mentally ill persons charged with federal crimes face the possibility of indefinite commitment.
A. Although the Supreme Court has on a number of occasions considered the constitutionality of involuntary commitment statutes, see, e.g., Jones v. United States, 463 U.S. 354, 103 S.Ct. 3043, 77 L.Ed.2d 694 (1983); Jackson v. Indiana, 406 U.S. 715, 92 S.Ct. 1845, 32 L.Ed.2d 435 (1972); Baxstrom v. Herold, 383 U.S. 107, 86 S.Ct. 760, 15 L.Ed.2d 620 (1966), it has never precisely indicated the standard of review it has exercised in reaching its decisions.4 In Jones, the Court indicated in dicta that the traditional rational basis test applies to involuntary commitment classifications, see 463 U.S. at 362 n. 10, 103 S.Ct. at 3048-49 n. 10, requiring only that the classification be rationally related to a legitimate government interest. See New Orleans v. Dukes, 427 U.S. 297, 303, 96 S.Ct. 2513, 2516, 49 L.Ed.2d 511 (1976).5 Defendant contends, however, that because “commitment for any purpose constitutes a significant deprivation of liberty,” Addington v. Texas, 441 U.S. 418, 425, 99 S.Ct. 1804, 1809, 60 L.Ed.2d 323 (1979), we should review the classification created in section 4246 under a heightened scrutiny standard of review, similar to that used for classifications based on gender. See Craig v. Boren, 429 U.S. 190, 210-11 n. % 97 S.Ct. 451, 463-64 n. * (1976) (Powell, J., concurring); Associated Gen. Contractors, Inc. v. City & County of San Francisco, 813 F.2d 922, 940 (9th Cir.1987), petition dismissed, — U.S. -, 110 S.Ct. 296, 107 L.Ed.2d 276 (1989). Under the heightened scrutiny test, a classification must be substantially related to the achievement of an important governmental interest. See Craig, 429 U.S. at 197, 97 S.Ct. at 456. We need not resolve the standard of review issue, however, as the result in this case would be the same under either standard.
B. The government’s interest in protecting society from those charged with crimes is both “legitimate and compelling.” United States v. Salerno, 481 U.S. 739, 749, 107 S.Ct. 2095, 95 L.Ed.2d 697 (1987). Thus, “[ejven competent adults may face substantial liberty restrictions as a result of the operation of our criminal justice system,” id., and the government routinely may classify persons on the basis of their status as criminal defendants. Persons charged with crimes may be subject to arrest, detention and interrogation; they may be searched, photographed, fingerprinted and, if found to be dangerous or a flight risk, held without bail. See id. at 751-52, 107 S.Ct. at 2103-04. And, of course, only criminal defendants face the distinct possibility of conviction and jail time. Here, for example, Sahhar faced up to five years in a federal institution and a substantial fine if convicted. See 18 U.S.C. § 871(a) (1988).
Sahhar contends, however, that while Congress may have broad authority over criminal defendants, it may not establish procedures that make it easier to commit those charged with crimes than to commit members of the general population. For this proposition, Sahhar relies primarily on Baxstrom v. Herold, 383 U.S. 107, 86 S.Ct. 760, 15 L.Ed.2d 620 (1966), and Jackson v. Indiana, 406 U.S. 715, 92 S.Ct. 1845, 32 [1202]*1202L.Ed.2d 435 (1972), both involving state involuntary commitment procedures for dangerous persons charged or convicted of crimes.
In Baxstrom, the Court invalidated as a denial of equal protection a New York statute that permitted involuntary commitment at the expiration of a prison sentence without a finding of dangerousness or jury review as required for all other civil commitments in New York. 383 U.S. at 110, 86 S.Ct. at 762. The Court rejected the state’s contention that the existence of a prior conviction — supposedly proving “criminal tendencies” — was a sufficient basis for affording an individual fewer procedural protections prior to commitment:
Where the State has provided for a judicial proceeding to determine the dangerous propensities of all others civilly committed to an institution of the Department of Correction, it may not deny this right to a person ... solely on the ground that he was nearing the expiration of a prison term____ All others receive a judicial hearing on this issue. Equal protection demands that Baxstrom receive the same.
Id. at 114-15, 86 S.Ct. at 764.
Even more on point is Jackson, which held that an Indiana statute providing for the commitment of incompetent criminal defendants denied petitioner equal protection because it imposed more lenient standards for commitment and more stringent standards for release than imposed by the state’s general civil commitment procedures. 406 U.S. at 730, 92 S.Ct. at 1854. The Court was particularly concerned that the statute did not require a finding of mental illness or feeblemindedness — required for ordinary civil commitments in Indiana — but merely that a defendant was incompetent to stand trial. Id. at 727, 92 S.Ct. at 1852. The Court also found that, under Indiana’s general civil commitment statute, petitioner probably would have been eligible for release in his present condition, but was not so as an incompetent criminal defendant. Id. at 729, 92 S.Ct. at 1853. Rather, on the facts of that case, it appeared that petitioner faced the distinct possibility of permanent institutionalization. Id. at 725-26, 730, 92 S.Ct. at 1851-52, 1854.
Jackson and Baxstrom do provide some support for Sahhar’s position. As did the statutory scheme in Jackson, section 4246 distinguishes among individuals solely on the basis of their status as charged criminal defendants. And, as did the State of New York in Baxstrom, the government here seeks to justify the distinction by arguing that those affected by section 4246 are already subject to criminal proceedings and, thus, may present a greater risk to society. Nonetheless, Jackson and Baxstrom are not dispositive; other cases teach that not every disparity between commitment procedures applicable to individuals accused of crimes and those applicable to the general population amounts to a denial of equal protection. See Jones v. United States, 463 U.S. 354, 103 S.Ct. 3043, 77 L.Ed.2d 694 (1983); Houghton v. South, 743 F.2d 1438 (9th Cir.1984); Hickey v. Morris, 722 F.2d 543 (9th Cir.1983).
In Houghton, we upheld a Montana statute that, as with the one at issue here and in Jackson, applied different standards for the commitment of criminal defendants found incompetent to stand trial than for the general population. 743 F.2d at 1439-40. In contrast to Jackson, the committing court in Houghton made a specific finding of dangerousness. Id. at 1440. There also existed a means by which the committed person could obtain his release similar to the means available for other civilly committed persons in Montana. Id. Thus, we concluded that the differences between the two procedures were not significant enough to constitute an equal protection violation.
Similarly, Jones v. United States considered equal protection and due process challenges to the District of Columbia’s automatic commitment procedures for criminal defendants found not guilty by reason of insanity. The Court upheld the procedures, even though insanity acquit-tees had no right to a jury finding of dangerousness. 463 U.S. at 362-63 n. 10, 103 S.Ct. at 3048-49 n. 10. Although the Dis[1203]*1203trict provided a jury trial in all other civil commitment hearings, the absence of a specific jury determination of dangerousness was “justified by the fact that the acquit-tee has had a right to a jury determination of his sanity at the time of the offense.” Id. (internal quotations omitted). Because the classification was sufficiently related to the government’s “strong interest in avoiding the need to conduct a de novo commitment hearing following every insanity acquittal,” it was upheld. Id. at 366, 103 S.Ct. at 3050; see also Hickey, 722 F.2d at 546-48 (rejecting similar equal protection challenge to Washington commitment statute for insanity acquittees).
Here, we find the classification created by section 4246 to be substantially related to important federal concerns. In addition to Congress’s well-established interest in protecting society from dangerous criminal defendants, Salerno, 481 U.S. at 749, 107 S.Ct. at 2102, section 4246 squarely addresses a unique federal concern — the control and treatment of dangerous persons within the federal criminal justice system who are incompetent to stand trial. Unlike most states, the federal government has chosen not to establish a comprehensive system of civil commitment, reserving to local authorities the principal task of committing dangerous, mentally ill persons. See United States v. Clark, 617 F.2d 180, 184 n. 5 (9th Cir.1980) (“The passage of [section 4246] was not intended to be an invasion of the general field of lunacy, which is reserved to the states.”); E. Beis, Mental Health and the Law, 112-39 (1984) (describing various state commitment procedures). Section 4246 thus is narrowly tailored to apply only to a particular concern of the federal government: dangerous persons charged with federal crimes but found incompetent to stand trial. See Greenwood v. United States, 350 U.S. 366, 375, 76 S.Ct. 410, 415, 100 L.Ed. 412 (1956).
Congress has a substantial interest in enacting legislation targeting those accused of federal crimes, just as it has a substantial interest in enacting legislation addressing other unique federal interests. See, e.g., United States v. Antelope, 430 U.S. 641, 647-50, 97 S.Ct. 1395, 1399-1400, 51 L.Ed.2d 701 (1977) (statute applying only to crimes committed on Indian reservations does not deny equal protection, even though punishment differs from that imposed by states in which reservations are located); United States v. Cohen, 733 F.2d 128 (D.C.Cir.1984) (en banc) (statute providing for commitment of federal insanity acquittees does not deny equal protection even though it applies only in the District of Columbia). By choosing to regulate individuals such as Sahhar, whose conduct implicates substantial federal concerns, Congress is not required to create a national system of commitment for all mentally ill individuals who might present a danger to society. To hold otherwise would burden too heavily the federal government’s compelling interest in administering its criminal justice system, and would precipitate a massive federal intrusion into a field that has generally belonged to the states.
Moreover, the criteria and procedures under which defendants are committed pursuant to section 4246 are not dissimilar to those employed by many states for general civil commitment,6 and do much to ensure [1204]*1204the fairness and accuracy of the commitment process. Federal commitment procedures provide for a short-term period of treatment and evaluation, followed by a full evidentiary hearing before a neutral magistrate. At the hearing, the alleged incompetent is entitled to his own attorney and, if he cannot afford one, appointed counsel. 18 U.S.C. § 4247(d), He may testify, present evidence, subpoena witnesses on his own behalf and confront and cross-examine witnesses who appear at the hearing. Id. Section 4246 permits civil commitment only if the court finds by clear and convincing evidence that the person suffers from a mental disease or defect and thus poses a substantial risk of bodily injury to another or serious property damage. 18 U.S.C. § 4246(d). And, of course, a defendant is not subject to section 4246’s provisions at all unless the government has sufficient grounds to prosecute for a criminal act and the director of the facility at which the defendant is being treated certifies that the defendant poses a substantial risk to society as a result of his condition. 18 U.S.C. §§ 4241(a), 4246(e).7 General civil commitment proceedings typically impose no such procedural hurdles prior to an involuntary commitment hearing.
The Attorney General is required to place the committed individual in a facility suitable to provide care or treatment given the nature of the charged offense and the condition of the defendant, 18 U.S.C. §§ 4246(d), 4247(a)(2), and must “make all reasonable efforts” to cause a state to assume responsibility for the committed person. 18 U.S.C. § 4246(d). The statute also provides for mandatory, periodic review of the commitment decision. It states that the director of a hospital facility
shall prepare annual reports concerning the mental condition of the [committed] person and containing recommendations concerning the need for his continued hospitalization. The reports shall be submitted to the court that ordered the person’s commitment to the facility and copies of the reports shall be submitted to such other persons as the court may direct.
18 U.S.C. § 4247(e)(1)(B) (emphasis added). The director is also under a statutory obligation promptly to request the court to release the committed person if the director determines that the person is no longer dangerous. 18 U.S.C. § 4246(e). Further, a committed person’s counsel or legal guardian may, at any time except within 180 days of the commitment determination, file a motion with the court requesting a hearing to determine whether the person should be discharged. 18 U.S.C. § 4247(h). The dissent’s assertion that “there is no provision for automatic, periodic review of the commitment decision,” dissent at 1209 n. 4, flies in the face of these provisions.
Without question, commitment under section 4246 is a significant infringement on the liberty interests of a person who has merely been charged, and not convicted, of criminal activity. Yet, the federal government’s decision not to subject the general population to these procedures does not amount to a violation of equal protection where, as here, the government’s interests are substantial and the procedures are tailored to serve those interests.
IV
Sahhar next challenges the constitutionality of section 4246 because it fails to provide for a jury trial to determine eligibility for commitment.8 He makes a two-pronged argument: First, that the commitment proceedings under section 4246 are “squarely in the routine of the criminal process,” Appellant’s Opening Brief at 28, [1205]*1205and thus require all the procedural protections of criminal proceedings; second, that even if the challenged commitment proceedings are purely civil in nature, due process requires that they be conducted before a jury.
A. The sixth amendment provides that “[i]n all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury.” Sahhar argues that since section 4246 proceedings are ancillary to a criminal prosecution, they are penal in nature and, therefore, his right to a jury trial prior to commitment approximates that of a criminal defendant. In short, he claims that his commitment proceeding was nothing more than a “direct substitute” for criminal prosecution. Thus, Sahhar contends that, as in a criminal trial, he was entitled to have a lay jury weigh the evidence and decide whether the facts of his case warranted involuntary commitment.
Sahhar’s argument is foreclosed by the Supreme Court’s decisions in Allen v. Illinois, 478 U.S. 364, 106 S.Ct. 2988, 92 L.Ed.2d 296 (1986), and United States v. Salerno, 481 U.S. 739, 107 S.Ct. 2095, 95 L.Ed.2d 697 (1987).9 Allen considered whether the fifth amendment’s guarantee against compulsory self-incrimination applies to commitment proceedings under Illinois’s Sexually Dangerous Persons Act. The Court held it does not, as the commitment proceedings were regulatory, not criminal in nature, even though they could not be brought unless criminal charges had been filed. 478 U.S. at 370, 106 S.Ct. at 2992. The Court further held that simply because the state provides some of the safeguards applicable in criminal proceedings — rights to counsel, to a jury trial and to confront and cross-examine witnesses, and the requirement that dangerousness be proved beyond a reasonable doubt — does not turn the proceedings into a criminal trial requiring the full panoply of rights applicable there. Id. at 371-72,106 S.Ct. at 2993. Finally, that a person adjudged dangerous is committed to a maximum-security institution that also houses convicts needing psychiatric care does not make the confinement “punishment;” nor does it render “criminal” the proceedings that led to it. Id. at 372-74, 106 S.Ct. at 2993-95.
Likewise, Salerno rejected a substantive due process challenge to provisions in the Bail Reform Act of 1984 permitting the pre-trial detention of dangerous individuals charged with certain specified offenses. The Court relied heavily on the fact that the statute advances important regulatory, rather than penal, interests. 481 U.S. at 746-48, 107 S.Ct. at 2100-02. Where Congress’s purpose in enacting a statutory scheme is to regulate, rather than to punish, the courts must treat it as such, so long as the scheme “may rationally be connected” to the regulatory purpose assigned it and is not “excessive in relation to [that] purpose.” Id. at 747, 107 S.Ct. at 2101 (internal quotations omitted). “[T]he mere fact that a person is detained does not inexorably lead to the conclusion that the government has imposed punishment.” Id. at 746, 107 S.Ct. at 2101.
We see no meaningful distinction between this case and Allen and Salerno. As with the detention procedures the Supreme Court considered in those cases, section 4246 protects society by placing into the government’s custody certain dangerous individuals. Section 4246 is not intended to address past wrongs, but rather to reduce the risk of future harm to persons and property. See United States v. Curry, 410 F.2d 1372, 1374 (4th Cir.1969); see also Addington, 441 U.S. at 428, 99 S.Ct. at 1810 (“[i]n a civil commitment state power is not exercised in a punitive sense”). As soon as the committed individual can demonstrate that he is no longer dangerous, he is entitled to be released. Thus, federal commitment serves a regulatory, rather [1206]*1206than punitive, purpose and section 4246 need not incorporate the right to a jury trial. See Commonwealth v. Barboza, 387 Mass. 105, 438 N.E.2d 1064, cert. denied, 459 U.S. 1020, 103 S.Ct. 385, 74 L.Ed.2d 516 (1982) (holding that the sixth amendment jury right does not apply to civil commitments).10
B. Because the sixth amendment is inapplicable here, we turn to Sahhar’s contention that the fifth amendment’s due process clause guarantees the right to a jury trial in civil commitment proceedings. In determining whether due process requires a particular procedure, a court must weigh “the liberty interest of the individual” against the government’s “legitimate interests” in confinement, “including the fiscal and administrative burdens additional procedures would entail.” Youngberg v. Romeo, 457 U.S. 307, 321, 102 S.Ct. 2452, 2461, 73 L.Ed.2d 28 (1982). This test, referred to in this circuit as “the fundamental fairness requirement,” is set forth adeptly in Tyars v. Finner, 709 F.2d 1274 (9th Cir.1983):
In weighing the liberty interest of the individual against the legitimate interests and purposes of the state in the civil commitment process, it is vital that, as a matter of constitutional due process, we impose those restrictions that are “imperative to assure the proceedings’ fundamental fairness.” However, we must also strive to “preserve, so far as possible, the essential elements of the State’s purpose,” and that we measure the requirements of due process with a sensitive awareness of the need to “permit the orderly selection of any additional protections which may ultimately prove necessary.”
Id. at 1283 (quoting In re Gault, 387 U.S. 1, 72, 87 S.Ct. 1428, 1467, 18 L.Ed.2d 527 (1967)).
Although involuntary “civil commitment for any purpose constitutes a significant deprivation of liberty that requires due process protection,” Addington, 441 U.S. at 425, 99 S.Ct. at 1809, the procedures required for a civil commitment are not nearly as rigorous as those for criminal trials, id. at 432-33, 99 S.Ct. at 1812-13, or even juvenile proceedings. For example, courts have held that the fifth amendment’s protection against self-incrimination does not apply to civil commitment proceedings, Allen v. Illinois, 478 U.S. 364, 106 S.Ct. 2988, 92 L.Ed.2d 296 (1986) (commitment of sexual deviants), that a state need only show dangerousness by “clear and convincing” evidence, Addington, 441 U.S. at 431-33, 99 S.Ct. at 1812-13, and that an attorney or guardian ad litem need not be appointed to represent an alleged incompetent at a commitment hearing. Rud v. Dahl, 578 F.2d 674, 678-79 (7th Cir.1978); but see, Heryford v. Parker, 396 F.2d 393, 396 (10th Cir.1968) (holding that such appointment is required). No federal appellate court, however, has considered whether due process gives an alleged incompetent the right to have a jury decide the factual issues in his commitment proceedings, although a number of district courts have held that no such right exists. See French v. Blackburn, 428 F.Supp. 1351, 1361 n. 19 (M.D.N.C.1977), aff'd mem., 443 U.S. 901, 99 S.Ct. 3091, 61 L.Ed.2d 869 (1979); Suzuki v. Quisenberry, 411 F.Supp. 1113, 1128 (D.Haw.1976); Doremus v. Farrell, 407 F.Supp. 509, 516 (D.Neb.1975); but cf. Lynch v. Baxley, 386 F.Supp. 378, 394 (M.D.Ala.1974) (“although there may be no such constitutional right, [1207]*1207we believe in most, if not all, instances a jury is desirable”).
Those district court decisions that have found no due process right to a jury trial in civil commitment proceedings have generally relied on McKeiver v. Pennsylvania, 403 U.S. 528, 91 S.Ct. 1976, 29 L.Ed.2d 647 (1971), in which the Supreme Court held that there was no right to a jury trial in a juvenile delinquency proceeding. See Suzuki, 411 F.Supp. at 1128; Doremus, 407 F.Supp. at 516; Lynch, 386 F.Supp. at 394. McKeiver held that trial by jury is neither a necessary element of the fundamental fairness guaranteed by the due process clause, nor an essential component of accurate factfinding, 403 U.S. at 543, 91 S.Ct. at 1985. The Court cited as examples equity cases, military trials, workmen’s compensation, probate and deportation cases, all of which satisfy the requirements of due process even in the absence of a jury. Thus, it could not be said “ ‘that every criminal trial — or any particular trial — held before a judge alone is unfair or that a defendant may never be as fairly treated by a judge as he would by a jury.’ ” Id. (quoting Duncan v. Louisiana, 391 U.S. 145, 158, 88 S.Ct. 1444, 1452, 20 L.Ed.2d 491 (1968)).
We similarly believe that any additional procedural fairness ensured by a jury trial is outweighed by the substantial burden a jury would impose on the commitment process. Like juvenile proceedings, section 4246 hearings are relatively informal and discrete, and they do not suffer from the complications and delays often associated with jury trials. The factfinding procedures employed, including the four-month period of pre-commitment observation, facilitate careful evaluation of the individual’s mental health and dangerousness. Other than “introducing into the process a lay judgment,” Appellant’s Opening Brief at 29 (internal quotations omitted), defendant has given no tangible reasons why a jury trial would make the commitment process more reliable or just. Because section 4246 hearings often involve difficult medical issues, lay judgment may be of little or no assistance to the factfinding process. Thus, we conclude that due process does not require a jury trial in a section 4246 proceeding.
V
Sahhar finally claims he was denied due process because the government failed to produce sufficient evidence to justify his commitment. Consistent with the requirements of due process, section 4246 requires the government to prove by clear and convincing evidence that an incompetent defendant presents a substantial risk of bodily injury or serious property damage. Sahhar contends, however, that due process and section 4246 also require the government to prove that he had recently committed overt acts evincing his dangerousness.
A. Section 4246 provides little guidance as to how the government must prove that the person to be committed poses a substantial risk of causing bodily injury or serious property damage. In Phelps v. United States, 831 F.2d 897 (9th Cir.1987), we held that the words “substantial” and “serious,” as used in federal commitment statutes, “cannot be quantified.” Id. at 898 (construing broadly identical “substantial risk” language in 18 U.S.C. §§ 4243 and 4247, which govern the commitment of those found not guilty by reason of insanity). Rather, the substantial risk requirement “guides the judge who must make the commitment decision,” and creates essentially the same standard for federal involuntary commitment as used in many state procedures. See id. Thus, we believe that a finding of “substantial risk” under section 4246 may be based on any activity that evinces a genuine possibility of future harm to persons or property. See Jones v. United States, 463 U.S. at 364-65, 103 S.Ct. at 3049-50 (nonviolent crime against property sufficient to establish dangerousness). Whether that activity occurred recently is but one factor for the district court to consider in weighing the evidence.
Nor do we believe that due process requires a finding that defendant recently committed dangerous acts. In establishing the clear and convincing evidence standard for civil commitments, Addington held that commitment must be based on “something [1208]*1208more serious than is demonstrated by idiosyncratic behavior.” 441 U.S. at 427, 99 S.Ct. at 1810. Otherwise, Addington placed no due process limits on the range of evidence a court may consider in reaching its decision. So long as the government can “justify confinement by proof more substantial than a mere preponderance of the evidence,” it may satisfy the requirements of due process. Id. Applying this standard, we now determine whether the evidence was sufficient to justify Sahhar’s commitment.
B. Reviewing the evidence in the light most favorable to the government, we must decide whether a rational trier of fact, applying the clear and convincing standard of proof, could have found Sahhar to be dangerous. See Jackson v. Virginia, 443 U.S. 307, 319, 99 S.Ct. 2781, 2789, 61 L.Ed.2d 560 (1979). Here, the district court received ample evidence demonstrating that Sahhar posed a substantial risk of causing future harm. During his period of evaluation and treatment from November 1987 until October 1988, Sahhar verbally and physically threatened staff members and other inmates, had to be physically restrained on at least one occasion, damaged at least three cells in which he was housed and physically assaulted a psychiatrist by approaching her from behind and squeezing her neck. Each of these acts occurred within a year of his commitment, and each clearly indicates the potential for risk to persons and property.
The government also presented testimony and reports from two mental health professionals who had treated Sahhar, Drs. Butts and Hetzel, who concluded that Sahhar was a paranoid schizophrenic and would continue to exhibit aggressive behavior. Their findings are consistent with evidence of nearly a decade of violent, antisocial behavior by defendant: Defendant repeatedly has had trouble controlling his temper, and has on numerous occasions manifested his emotions in aggressive behavior. “It comports with common sense to conclude that someone whose mental illness was sufficient to lead him to commit a [dangerous] act is likely to remain ill and in need of treatment.” Jones, 463 U.S. at 366, 103 S.Ct. at 3050; see also Clark, 617 F.2d at 186. We therefore conclude that the district court’s finding that defendant posed a substantial risk of bodily injury and serious property damage was supported by substantial evidence.
VI
The judgment of the district court is affirmed in its entirety.