Opinion for the Court filed by Circuit Judge TATEL.
Following a joint trial with two other defendants, a jury convicted appellant of armed robbery, assault with intent to murder, assault with a deadly weapon, and related crimes in connection with a restaurant robbery and a nightclub shooting. His code-fendants were convicted of thirteen additional crimes, including murder. The jury hung on RICO and RICO conspiracy counts. Seeking reversal of his convictions, appellant argues that the RICO charges, together with his joint trial with codefendants charged with more serious crimes, resulted in the introduction of highly prejudicial evidence that would have been inadmissible in the absence of the RICO charges. Because we find that a reasonable jury, viewing the evidence in the light most favorable to the government, could have found that the government’s evidence proved the elements of a RICO violation beyond a reasonable doubt, we reject his claims. We reverse one of appellant’s two felon-in-possession convictions because, as the government concedes, there was no evidence that appellant possessed more than one gun or that he acquired or stored them separately. Finding appellant’s remaining claims without merit, we affirm in all other respects.
I
A grand jury indicted appellant Billy Richardson and his codefendants Harold Cunningham and Percy Barron on RICO, RICO conspiracy, and other charges flowing from their alleged participation in an armed robbery ring. According to the indictment, their criminal activity consisted of fifteen separate incidents lasting from July 8 to October 17, 1993, the date on which the police apprehended the last of the defendants after a shoot-out. Their crime spree began with armed robbery of money and guns and escalated to shootings of robbery victims, bystanders, and rivals in crime. They killed five people. The indictment charged them with conducting their crimes as an informal criminal enterprise with Cunningham as its leader and primary decisionmaker.
The indictment identified Richardson as having participated in four of the fifteen predicate acts of the alleged enterprise. It formally charged him in connection with two. The first charged incident occurred outside the Ibex nightclub in the District of Columbia. Having left the club following an altercation with a member of a rival street crew, Richardson and his codefendants returned with guns and opened fire on people standing in a crowd outside the club. They wounded five. The second incident occurred a month later at Horace & Dickie’s carry-out restaurant, also in the District of Columbia. Entering the restaurant, Richardson and his codefendants brandished handguns, emptied the cash register, and robbed the three employees. As the robbers fled, an employee followed to get the license plate number on their getaway car. One of the robbers — the employee could not identify which — fired at the employee but missed. The two uncharged incidents involved an armed robbery outside an Annapolis apartment complex and a shoot-out with a Maryland police officer.
The indictment charged Richardson with RICO, 18 U.S.C. § 1962(c) (1994), RICO conspiracy, id. § 1962(d), armed robbery, D.C. Code §§ 22-2901, 22-3202 (1981), second degree burglary while armed, id. §§ 22-1801(b), 22-3202, assault with intent to murder while armed, id. § 22-503, assault with a dangerous weapon, id. § 22-502, possession of a firearm during a crime of violence, id. § 22-3204(b), felon in possession of a firearm, 18 U.S.C. § 922(g)(1), ’and use of a firearm during a crime of violence under the *624 Hobbs Act, id. § 924(c). His codefendants were charged with additional counts of armed robbery and assault and with five counts of murder.
Before trial, Richardson moved to sever his trial from that of his codefendants. He claimed that joint trial would be prejudicial because his codefendants were charged with more serious crimes. Denying this motion, the district court said, “[I]t certainly doesn’t appear ... that the amount of evidence or the type of evidence is so disparate in terms of Mr. Richardson as opposed to the other two defendants that there would be compelling prejudice to his case.” Tr. 11/20/95 a.m. at 105. At the close of the government’s case and again at the close of all the evidence, Richardson moved to dismiss the two RICO charges for insufficient evidence. The district court denied the motions, finding that the government’s evidence adequately supported the two RICO charges.
A jury convicted Richardson and his code-fendants on virtually all predicate counts. It hung on the RICO and RICO conspiracy charges, as to which the district court declared a mistrial. Richardson then moved for a new trial on the other substantive counts. Claiming that the RICO charges were unsupported by the evidence, Richardson argued that the charges enabled the government to introduce unfairly prejudicial evidence, including the two uncharged Maryland crimes and his general association with the eodefendants beyond the two charged incidents. Moreover, he argued, it was the RICO charges that made joint trial possible, and the joint trial caused “spillover” prejudice stemming from the codefendants’ more serious crimes. The district court denied the motion.
We severed Richardson’s appeal from his codefendants’. In
United States v. Cunningham,
we affirmed the codefendants’ convictions except for the multiple felon-in-possession counts, which we found merged into one.
II
Richardson’s primary argument centers on the district court’s denial of his pretrial motion to sever and his post-trial motion for a new trial. In multi-defendant cases, Federal Rule of Criminal Procedure 8 authorizes joinder of defendants and charges if the charges arise from “transactions connected together or constituting part of a common scheme or plan,” Fed. R. Crim. P. 8(a), and if the defendants are alleged to have participated in “the same series of acts or transactions constituting an offense or offenses,” Fed. R. Criím. P. 8(b). Joint trials are favored in RICO cases.
Cf. United States v. Ford,
In this case, the RICO and RICO conspiracy counts functioned as the “connective tissue,” as the district court put it, that allowed joinder of all fifteen incidents and all three defendants in a single trial.
United States v. Cunningham,
No. 95-88, at 23 (D.D.C. Jan. 18, 1996) (“District Court Order”). Reiterating the arguments that he made in district court, Richardson claims that the government failed to present sufficient evidence to support either RICO or RICO conspiracy and that his joint trial was unfairly prejudicial. Starting with his sufficiency of the evidence argument, we ask whether a reasonable trier of fact, viewing the evidence in the light most favorable to the government and drawing all reasonable inferences in the government’s favor, could find the essential elements of the crime proved beyond a reasonable doubt.
See United States v. Dingle,
Richardson’s sufficiency of the evidence argument focuses on two of the four elements of a RICO violation: the “existence of an enterprise” affecting interstate commerce and his participation in it through a “pattern of racketeering activity.”
See United States v. Hoyle,
Richardson does not claim that the government failed to prove a “common purpose” among the participants (the first Perholtz factor), and for good reason: As the district court observed, the government presented “undeniable” evidence that their common purpose was “to obtain money or other property by robbery.” District Court Order at 5. Focusing instead on the second and third Perholtz factors, Richardson contends that the government presented only minimal evidence of “organization” and “continuity” beyond that necessary to commit the individual predicate crimes. We disagree.
To begin with, the evidence showed that Richardson and his codefendants organized themselves hierarchically and planned their activities. According to trial witnesses, Cunningham served as the leader: He was usually first through the door and first to display a firearm. He announced the robbery, gave orders to the victims, and directed Richardson and Barron during the course of the robberies. Additional evidence of organization and continuity comes from the robberies’ consistent pattern; from testimony that Richardson and his eodefendants borrowed or rented cars to commit their crimes and attempted to switch license plates to avoid detection; from ballistics analysis establishing that they used guns stolen in earlier crimes to facilitate later robberies and shootings; from testimony that they committed acts of violence and retaliation to protect their armed robbery enterprise; and from evidence that the three had social ties and were often seen together during the summer of 1993, thus further supporting the existence of an association independent of their individual crimes.
In his second challenge to the RICO charges, Richardson argues that the government failed to presen^ evidence sufficient to prove that he engaged in a pattern of racketeering activity. He relies on
H.J. Inc. v. Northwestern Bell Telephone Co.,
which held that “[predicate acts extending over a few weeks or months and threatening no future criminal conduct do not satisfy this [pattern] requirement: Congress was concerned in RICO with long-term criminal conduct.” 492
*626
U.S. 229, 242,
We agree with the government. The “fortuitous interruption of [racketeering] activity such as by an arrest” does not grant defendants a free pass to evade RICO charges.
United States v. Busacca,
Because we have found sufficient evidence of an ongoing RICO enterprise involving Richardson, Cunningham, and Barron to support their joint trial and joinder of offenses, we need not address Richardson’s claim of prejudice. The district court did not err in denying Richardson’s pretrial motion to sever or in refusing to declare a mistrial on Richardson’s substantive convictions.
Ill
Richardson’s remaining arguments require little discussion. With one exception, they all fail.
Richardson first claims ineffective assistance of counsel based on trial counsel’s failure to file a motion to dismiss under the Speedy Trial Act. Richardson’s detention hearing occurred on April 27, 1995, but his trial did not begin until over a year later, on May 1, 1996. Accounting for speedy trial clock suspension for consideration of pretrial motions, Richardson argues that the delay violated the Act’s seventy-day maximum by more than a month, requiring dismissal of the charges.
Because ineffective assistance claims usually require evidentiary hearings, we normally do not resolve such claims on direct appeal.
See United States v. Fennell,
Even if the speedy trial clock did run out, moreover, the record suggests that counsel might well have had sound strategic reasons for not pursuing the violation. Asked by the district court whether he objected to the May 1996 trial date, trial counsel stated: “Given, from a lawyer’s standpoint, what we’re facing and what we’re facing in terms of investigation, I obviously would tell him that I would feel as his representative, to put it mildly, uncomfortable in trying to try a case like this in 70 days, and that’s putting it mildly.” Tr. 5/22/95 a.m. at 22. Given the complexity of this case, involving fifteen different crimes, multiple defendants, and allegations of RICO and RICO conspiracy, we cannot assume that counsel’s failure to pursue a Speedy Trial Act claim amounted to ineffective assistance. Under these circumstances, Richardson must pursue his claim under 28 U.S.C. § 2255 (1994).
Richardson next challenges his convictions for assault with intent to murder while armed flowing from the Ibex nightclub shooting, essentially contending that a vari-
*627
anee between the indictment and the government’s evidence at trial violated his right to be tried only on charges presented in an indictment returned by a grand jury. Richardson argues that because the government’s evidence proved at most that he and his codefendants fired randomly into the crowd, it cannot support the indictment’s charge that they assaulted each of six specifically named individuals “with intent to murder
him”
(emphasis added). Richardson relies on
Joseph v. United States,
Had the government relied at trial on some theory of intent other than that accepted by the grand jury in the indictment, Richardson might well have a valid constitutional claim.
Cf. Stirone v. United States,
Next, relying on D.C. precedent that treats assault with a dangerous weapon as a lesser included offense of armed robbery,
see Norris v. United States,
To determine whether criminal acts are separate or part of the same crime, the D.C. Court of Appeals uses a “fork in the road” test.
Spain v. United States,
Applying these standards, we agree with the government that Richardson’s convictions for armed robbery and assault with a deadly weapon do not merge. In
Heiligh v. United States,
the D.C. Court of Appeals found that defendants committed a fresh offense where, after making their robbery victims lie on the floor and then exiting the building, they threatened to shoot the victims who were following them.
See
*628
In the alternative, Richardson argues that if the armed robbery and the assault are different crimes, then the evidence showing only that he aided and abetted the robbery cannot support his conviction for aiding and abetting the assault. This is a non sequitur. Inferring from Richardson’s aiding and abetting the robbery that he aided and abetted the assault in no way conflicts with the notion that the two are separate crimes. In any event, evidence that Richardson was present at the time of the shooting, that he and his codefendants were armed, and that he acted.in concert with them to flee the scene, supports an inference that Richardson could have foreseen that one of his cohorts would fire at the pursuing employee, and that he therefore aided and abetted that assault.
See United States v. Jones,
Relying on
Cunningham,
where we found that Richardson’s codefendants’ multiple felon-in-possession convictions under 18 U.S.C. § 922(g) merged into one because the government presented no evidence that they possessed more than one gun or that they acquired or stored them separately, Richardson urges us to reverse one of his two felon-in-possession convictions for the same reason.
See
We have considered Richardson’s remaining arguments and find them without merit. With the exception of one of his felon-in-possession convictions, Richardson’s convictions are affirmed.
So ordered.
