In these consolidated criminal appeals, Todd Arsenault, Stephen Balsam, John Meuse, Thomas Meuse and Joseph Zacku-lar seek to set aside their respective convictions, and in certain instances the sentences imposed by the district court, in connection with a rash of armed robberies perpetrated in the Boston area during 1990. We affirm the district court judgment in all respects.
I
BACKGROUND
While employed as an electrician at Bay-Bank in Lynn, Massachusetts in 1989, Thomas Meuse stole the bank’s blueprints. Later,- he recruited his friend James Ferguson, a convicted armed robber, as well as several other accomplices, to rob the bank. Meuse planned to cut a hole in the roof at night, through which Ferguson could gain access. Once inside, Ferguson was to wait until bank employees arrived for work the following morning, threaten them with a gun, then force them to open the vaults.
On January 7, 1990, Meuse and Ferguson, along with other accomplices, committed the BayBank robbery as planned and made away with approximately $125,000. Over the next eleven months, the group robbed fourteen other banks and business establishments in the Boston area. 1
Thomas Meuse participated in almost all the robberies which took place prior to his arrest in August 1990. James Ferguson *79 participated in all the robberies. The remaining appellants — John Meuse (Thomas Meuse’s brother), Todd Arsenault, Stephen Balsam, and Joseph Zackular — -joined the conspiracy later. 2
Thomas Meuse was indicted in December 1994 on a single count of aiding and abetting an armed bank robbery. See 18 U.S.C. § 2113(a), (d); id. § 2(a). Over the next six months, four superseding indictments issued, adding various charges and codefendants. 3 Following further discovery and extensive pretrial-motion practice, the forty-eight-day trial began in March 1997.
James Ferguson, a prime government witness whose testimony spanned eight days, described the criminal activities of his codefendants in lurid detail. Notwithstanding the extensive cross-examination of Ferguson by defense counsel, guilty verdicts were returned against each defendant on multiple counts. 4
II
DISCUSSION
A. The Speedy Trial Act Claim
Thomas Meuse claims that the trial was delayed for more than seventy nonex-cludable days in violation of the Speedy Trial Act (STA). See 18 U.S.C. § 3161(c)(1). There was no reversible error. 5
On May 5, 1995, Thomas Meuse and the government submitted a joint motion to continue the hearing on Meuse’s various pretrial motions. The motion stipulated that the “[t]he government [was] in the process of providing defense counsel with 79 transcripts of recorded conversations as well as other discovery materials,” and that “[o]nce that process is complete, the parties will be in a better position to agree on certain [discovery-related] matters and to conduct a meaningful hearing before the Court.” Through counsel, Meuse expressly agreed that the requested continuance would “serve the ends of justice and that such action outweighs the best interests of the public and the defendants in a speedy trial.” Although it allowed the continuance, the district court did not simultaneously reschedule the hearing date. Ultimately, the hearing took place on January 22, 1996 — 206 days after the fourth superseding indictment had been filed.
The STA states that “interest of justice” continuances are to be excluded in computing the maximum seventy-day STA time period.
See
18 U.S.C. § 3161(h)(8)(A).
6
*80
Based on our decision in
United States v. Barnes,
Meuse further contends that his former counsel rendered ineffective assistance by endorsing the continuance. Meuse states that he told his attorney at the outset to accept no continuance because Meuse believed that the government had not yet gathered sufficient evidence to convict. Although we normally decline to address ineffective-assistance claims on direct appeal,
see United States v. Ademaj,
In order to demonstrate ineffective assistance, a defendant must prove that defense counsel’s decision was (1) so deficient that it did not come within the “wide range of reasonable professional assistance,” and (2) actually prejudiced the defense.
United States v. Ortiz,
Notwithstanding the conclusory assertion that the government lacked the evidence to convict, the record discloses that on May 5, 1995 the government and the defense were engaged in exchanging voluminous discovery materials — including dozens of transcripts of incriminating tape-recorded conversations — in a highly complex criminal case potentially involving multiple defendants. Moreover, after Meuse dismissed his first attorney, replacement counsel vigorously proceeded with various pretrial and discovery motions. Based on the sheer volume of the discovery materials disclosed by the government, Meuse’s attorneys would have rendered less than effective assistance had they insisted on proceeding to trial precipitously, without adequate opportunity to review "the strengths and weaknesses of the government’s evidence.
Furthermore, the present record does not demonstrate that the 206-day delay prejudiced the Thomas Meuse defense. For one thing, the defense relied heavily on the taped conversations to impeach Ferguson, the prime prosecution witness. See, e.g., infra Section II.H. 7 There was no STA violation.
*81 B. The Sealing of the Fourth Superseding Indictment
Thomas Meuse and Todd Arsenault contend that it was improper to seal the fourth superseding indictment filed in June 1995 since the government did not disclose the reasons for doing so, and further, that the government chose to seal the indictment in order to gather additional evidence against the defendants, not because it needed more time to arrest defendants. Finally, they urge dismissal on the ground that only a properly sealed indictment tolls the statute of limitations and the limitations period had elapsed before the court unsealed the fourth superseding indictment in February 1996. 8
Criminal Rule 6(e)(4) provides:
The federal magistrate judge to whom an indictment is returned may direct that the indictment be kept secret until the defendant is in custody or has been released pending trial. Thereupon the clerk shall seal the indictment and no person shall disclose the return of the indictment except when necessary for the issuance and execution of a warrant or summons.
Fed.R.Crim.P. 6(e)(4). Rule 6(e) rests on the premise that criminal defendants not yet in custody may elude arrest upon learning of their indictment. Once the court sealed the fourth superseding indictment in this case, arrest warrants were issued against Arsenault, Balsam and Zackular, who had not yet been taken into custody on the federal charges. Contrary to appellants’ contention, moreover, the government need not articulate its reasons for requesting that an indictment be sealed, so long as its request is based on a ground set forth in Rule 6(e).
See, e.g., United States v. Laliberte,
Their further assertion—that the government utilized the sealing procedure as a ruse—is meritless. Rule 6(e) does not “forbid the sealing of an indictment for any reason other than taking a defendant into custody ... [but] a magistrate may grant the government’s request ... ‘for any legitimate prosecutorial objective or where the public interest otherwise requires it.’ ”
United States v. Richard,
Nevertheless, appellants contend that the government should have returned to court to inform the magistrate judge of its new objective. Appellants cite no authority for their contention, however, and the authority we have found is to the contrary. See id. (finding “no authority for the implied proposition that the government must return to the magistrate as each new reason for continuing the sealing order arises”). Finally, appellants point to no evidence that the ensuing seven-month delay was either pretextual or unreasonable. 9
We therefore affirm the refusal to dismiss the indictment.
C. The Courtroom Seating Arrangements
Citing the small courtroom and the attendant security concerns, the district *82 court directed that the defendants be seated in the front row of the spectator section, rather than beside their respective counsel at the defense table. John Meuse claims that the mandated seating arrangement prevented or restrained defendants from exercising their Sixth Amendment right to communicate with counsel at trial. Further, he argues that these arrangements improperly undercut the presumption of innocence, as the jury may have inferred from the isolated grouping of the defendants that they must be coconspira-tors, as charged, and because the court security officers rose to their feet each time defendants got up to consult with counsel, thus perhaps intimating to the jury that defendants posed a security risk. Finally, Meuse faults the district court for failing even to consider the alternative seating arrangement proposed by the defendants, which would have moved the defense counsel table forward two or three feet, thereby enabling the defendants to be seated in a row directly behind their respective counsel.
As courtroom seating arrangements “depend[] upon such a variety of factors,
e.g.,
the size of the courtroom, the number of spectators, the number of defendants and lawyers, acoustics, security provisions, etc;,” we will not disturb the trial court decision for anything less than “a clearcut abuse of discretion.”
United States v. Turkette,
First, the district court ruled that its seating arrangement was necessary due to the limited space available in the small courtroom, and by the obvious security concerns which might arise if ten people were to be seated at or behind the defense table. Under the district court plan, moreover, the five defendants were seated only four to five feet from the defense table, in the front row of the spectator section. The trial judge also assured the defendants that they could consult freely with their attorneys as they wished, either by walking the short distance to the defense table, or passing written notes.
See United States v. Sorrentino,
Nor is it apparent that defendants sustained any other significant or unwarranted prejudice. The front row in the spectator section is not an inherently prejudicial location for seating criminal defendants.
See Turkette,
Finally, their characterization of the court security officers’ movements — as “defensive” — is subjective and conclusory. The record in no way suggests that the security officers’ actions were either so dramatic or unusual as to influence the jury unduly.
We therefore discern no clearcut abuse of discretion in the district court ruling. See id. at 10. 10
*83 D. The Sufficiency of the Evidence
Thomas Meuse claims that the government adduced insufficient evidence that he knew Ferguson would use a gun during their armed robbery of the Somerset Savings Bank on February 10, 1990, and that this court must therefore reverse his conviction for aiding and abetting Ferguson in the use of a firearm during that robbery. See 18 U.S.C. § 924(c)(1). More particularly, Meuse argues that although he and Ferguson did discuss the need to use a firearm for the Lynn BayBank robbery in January 1990, they did not do so in regard to the Somerset Savings Bank robbery, in which a significantly different modus oper-andi was employed.
In order to convict Meuse of aiding and abetting, it was necessary for the government to prove that he knew to a “practical certainty,”
United States v. Spinney,
First, Meuse exaggerates the dissimilarities in the modi operandi employed in the two robberies. He planned and instigated these robberies because he had worked inside both banks, as an electrician, and was familiar with their layouts and security systems. In discussions with Ferguson prior to the first robbery, Meuse proposed to bypass the security systems by cutting through the bank’s roof. He suggested that Ferguson be lowered into the bank to await the early arrival of bank employees, whom Ferguson was to threaten with a weapon in order to gain access to the vaults. Afterward, Ferguson was to flee in a getaway car manned by Meuse and their accomplices. The same essential elements were utilized in the first two robberies, as well as in several later robberies. Although Ferguson did not testify that he and Meuse again spoke about using a gun immediately prior to the second robbery, the very absence of any such discussion on the second occasion fairly invited .a rational jury inference that the second bank robbery was to be conducted in essentially the same manner, including the intimidation of bank employees with a gun, successfully employed in the first robbery.
There was other evidence as well from which the jury rationally could find that Meuse himself carried the gun to the second bank robbery. Ferguson testified that, following the first robbery, he gave Meuse the gym bag which contained not only Ferguson’s 9mm semiautomatic pistol but also the tools Meuse had used to cut a hole in the Lynn BayBank roof. Meuse took the bag home with him; then, as Ferguson testified, Meuse carried it to the second robbery. Thus, the jury rationally could infer that upon opening the gym bag to retrieve the cutting tools needed to penétrate the Somerset Bank roof, Meuse would have seen the gun. Moreover, Ferguson testified that he used the same weapon in both robberies.
Therefore, viewed in the light most favorable to the verdict,
see Guerrero,
E. The Guilty Plea Colloquy
Thomas Meuse next contends that the district court erred in admitting into evidence the state-court plea colloquy which took place at the time he pled guilty to charges arising out of his abortive August 1990 robbery of Lloyd’s Diamond & Gold. Citing
Old Chief v. United States,
Evidentiary rulings under Federal Rule of Evidence 403 .are reviewed only for abuse of discretion.
See United States v. Tse,
In contrast, however, “the prosecutor’s choice [not to accept a defendant’s stipulation] will generally survive a Rule 403 analysis when a defendant seeks to force the substitution of an admission for evidence creating a coherent narrative of his thoughts and actions in perpetrating the offense for which he is being tried.”
Id.
at 192,
F. The Rule 404(b) Objections
Joseph Zackular and John Meuse challenge various evidentiary rulings pursuant to Federal Rules of Evidence 403 and 404(b).
12
These rulings are reviewed for abuse of discretion only.
See United States v. Mangual-Corchado,
Prior to trial, Zackular submitted a motion in limine announcing his intention to cross-examine Ferguson to expose his personal bias against Zackular; specifically, that following his arrest Ferguson had attempted to have Zackular murdered. Citing Federal Rule of Evidence 403, Zac-kular contended that the government should not be allowed to introduce evidence as to the basis for Ferguson’s ani *85 mus; ie., that Ferguson mistakenly believed that Zackular, who had been under indictment for unrelated federal extortion charges in 1990, had implicated Ferguson in the robberies which took place in 1990 in order to obtain favorable treatment from the government in Zackular’s extortion case. In November 1990, Zackular pled guilty to conspiring to transmit threats in interstate commerce. Ferguson was arrested in December 1990.
Although the district court did not permit the government to establish that Zac-kular had been convicted of extortion, the government was allowed to introduce evidence that a criminal case was pending against Zackular in 1990. The district court determined that the probative value of this limited proof — ie., providing the jury with the “complete story” relating to Ferguson’s alleged bias — substantially outweighed any danger of unfair prejudice.
Contrary to Zackular’s claim, no
per se
rule bars the government’s introduction of evidence clearly relevant to a jury’s assessment of a government witness’s bias.
13
Absent any explanation for Ferguson’s animus toward Zackular, the jury might be misled to conclude that Ferguson’s feelings were irrational or arbitrary.
See, e.g., United States v. Robinson,
Second, the court did not abuse its discretion by admitting the testimony of Jeannette Dion that Dion feared her former boyfriend, John Meuse. First, the court did not permit Dion to describe specific “bad acts” which might explain the grounds for her fear. Further, the Dion testimony was relevant, as it explained her reluctance to testify as a government witness. Any countervailing prejudicial effect was slight, as Dion testified that she had been fearful of Meuse on but one occasion, and was “not afraid of him otherwise.” Any error was harmless as well, given the direct evidence of Meuse’s guilt
(e.g.,
the Ferguson testimony).
See, e.g., United States v. Harris,
Finally, asked what Meuse had done with the robbery proceeds, Dion testified that he had bought marijuana. As Meuse preserved no objection to this evidence,
15
we review for plain error only.
*86
See United States v. Conley,
G. The Juror Misconduct Claim
Appellants fault the district court for failing to “voir dire” the jury after counsel to John Meuse reported having observed jurors examining one another’s notes. Appellants insist that the trial judge was duty-bound to investigate these allegations.
See, e.g., United States v. Ortiz-Arrigoitia,
As the district courts are better situated to determine whether juror misconduct occurred and prejudice resulted, we normally review their remediation measures only for a patent abuse of discretion.
See United States v. Cruz,
As counsel for John Meuse was the one person in the courtroom who reportedly observed the alleged misconduct, the district court simply instructed the jurors that they were not to look at each other’s notes. Since appellants failed to move for a mistrial, the remediation measures selected by the district court are reviewed only for plain error.
See id.
at 442. And since the misconduct in question was uncorroborated,
16
and did not raise the same specter of prejudice as improper outside influences upon the jury,
cf. id.
at 443 (voir dire conducted where juror allegedly discussed case with daughter, who was seen speaking with defendant’s girlfriend);
cf. also United States v. Bertoli,
H. Limitations on Cross-examination
Zackular claims that the district court erred in denying him an unrestricted opportunity to play the tape recordings of Ferguson’s jailhouse conversations in an effort to show that Ferguson was biased and lacked credibility. See Fed.R.Evid. 608(b). 17 The proffered tape recordings graphically described Ferguson’s efforts to have Zackular killed. Since the defense theory turned principally upon Ferguson’s personal animus toward, and motives for falsely implicating, Zackular, it is Zacku-lar’s contention that the district court rul *87 ing violated his Sixth Amendment right to confront the witnesses against him.
Confrontation clause challenges are reviewed
de novo
to determine whether defense counsel was afforded a reasonable opportunity to impeach adverse witnesses; once that threshold is reached, the trial court’s restrictions on the extent and manner of cross-examination are reviewed only for abuse of discretion.
See United States v. Gomes,
First, during the cross-examination of Ferguson, Zackular’s counsel elicited an admission that Ferguson had tried to have Zackular killed. Moreover, Zackular played two taped conversations in which Ferguson ' described his antagonism; for example, Ferguson threatened to “blow [Zackular’s] head off.” As the jury was adequately apprised of the nature and vehemence of Ferguson’s feelings toward Zackular, Zackular was afforded an adequate opportunity to impeach the witness in conformance with the Sixth Amendment right of confrontation.
Furthermore, the district court expressly ruled that Zackular would be permitted to play any tape recording which disclosed Ferguson’s bias.
See id.
at 81 (“[E]xtrinsic evidence is admissible to show [witness] bias.”). Inexplicably, however, Zackular has identified no particular tape excerpt which he was precluded from using.
See United States v. Bongiorno,
I. Closing Arguments
Appellants contend that their convictions must be set aside due to improper closing arguments by the prosecution. First, they assert that the prosecutor intimated that defendants had the burden of proof and that they should have taken the stand.' For instance, the prosecutor stated: “Did you hear any effort made [by the defense] ... to ask [Ferguson] about whether he had ever made any inconsistent statements [e.g., in his taped conversations] about [appellants’ involvement in] these robberies?”
Closing arguments are reviewed
de novo
and reversible error will be found only if the arguments were “ ‘both inappropriate and harmful.’”
United States v. Laboy-Delgado,
The prosecution may not comment on a defendant’s failure to take the witness stand in his own defense.
See Griffin v. California,
Second, appellants complain that the government vouched for Ferguson’s credibility. After observing that Ferguson would lose the benefits of his plea bargain were he to perjure himself, the prosecutor stated: “[Ferguson would] just throw that away, knowing that he would have two federal prosecutors, agents, going out checking everything he is saying, verifying. ... You have seen a mountain of records ... all of this stuff is being checked and verified, the things that he is saying.... Judge Lindsay, who has heard all of this [viz., the government’s case] for the last three months and particularly James Ferguson for three weeks, will make that decision as to what sentence to give him.” (Emphasis added.) Appellants argue that these comments suggested to the jury that the prosecutor or the judge knew of evidence, never disclosed to the jury, which would confirm that Ferguson was telling the truth.
As appellants failed to object to the closing remarks, we review only for plain error.
See United States v. Smith,
“ ‘[A] prosecutor may not place the prestige of the government behind a witness by making personal assurances about the witnesses] credibility;’ nor may the prosecutor indicate that facts outside the jury’s cognizance support the testimony of the government’s witnesses.”
United States v. Bey,
Although these particular comments were inexpert and ill-advised, their context belies appellants’ efforts to convert them into plain error. The prosecutor did not imply — at least not clearly and unequivocally — that the so-called “verification[s]” of Ferguson’s story had not been introduced in evidence at trial. Rather, by stating that “[y]ou have seen a mountain of records,” the prosecutor implied that this corroboration consisted only of documents already introduced at trial.
See United States
v.
Dockray,
*89 J. The Hobbs Act Instruction
John Meuse contends that the district court erroneously instructed the jury on the Hobbs Act count. Although the government must prove that the establishments which appellants allegedly robbed had operated in interstate commerce, the district court instructed as a matter of law that the businesses at issue in this case were engaged in interstate commerce.
As Meuse failed to object to the instruction below, we review for plain error.
See United States v. Owens,
K. Sentence Enhancement for Obstruction of Justice
John Meuse claims that the district court erred in imposing a two-level enhancement for obstruction of justice. See U.S.S.G. § 3C1.1. During Ferguson’s cross-examination, Meuse blurted out in open court: “I want to fire [my] lawyer because I believe she’s working with the prosecution.” Thereafter, in various colloquies with the court, Meuse requested a severance, claimed that he had told his attorney earlier in the day that he intended to fire her, and maintained that he had been forced to blurt out the above information in open court once he realized that she did not intend to convey his wishes to the court.
A district court finding that a defendant obstructed justice is reviewed only for clear error,
see United States v. Cardales,
The record contained ample support for a preponderance-of-the-evidence finding that Meuse uttered this statement with intent to obstruct the trial and gain an advantageous severance,
see United States v. Feldman,
*90 Thus, the record amply supported the district court finding, by a preponderance of the evidence, that Meuse “calculated [his outburst] to create the greatest damage to his trial,” in hopes of obtaining a belated severance.
L. The Restitution Order
Finally, Todd Arsenault argues that the district court erred in ordering $70,000 in restitution, without first considering his ability to pay. He claims a limited future-earning potential on the ground that he had reported income totaling only $1383 in the preceding ten-year period, has serious medical and emotional problems, and little education or vocational training.
We review restitution orders for abuse of discretion.
See United States v. LiCausi,
Ill
CONCLUSION
Appellants’ many other arguments having been carefully considered as well, and having been determined meritless, we affirm their respective convictions and sentences.
Affirmed.
Notes
. These were: Somerset Savings Bank (2/90); a Stoneham jewelry store (3/90); Malden Trust Company (3/90); Warren Five Cents Savings Bank (4/90); Woburn BayBank (5/90); Lynn BayBank (5/90); Malden Bay-Bank (5/90); East Boston Savings Bank (6/90); Depositors' Trust Company (7/90); Lloyd’s Diamond & Gold (8/90); Gallahue’s Market (9/90); Everett Cooperative Bank *79 (9/90); Woburn BayBank (10/90); and Capital Bank & Trust (11/90).
. John Meuse joined in March 1990, Arse-nault in May 1990, Balsam in August 1990. Zackular's involvement developed more gradually: Ferguson used proceeds from the January 1990 robbery to buy a car from a dealership owned by Zackular. Over the next several months, the two became friends. Eventually, Ferguson confided in Zackular that the money used to buy the car had been stolen. At that time, Zackular advised Ferguson how to set up a sham business to conceal the source of the stolen funds. Eventually, Zackular asked if he could participate in the last two robberies, which occurred during October and November 1990.
. The additional charges included: conspiracy to commit armed bank robbery, 18 U.S.C. § 371; armed bank robbery, id. § 2113; using a firearm in a crime of violence, id. § 924(c)(1); and conspiring to affect commerce by means of robbery, id. § 1951.
. Thomas Meuse was sentenced to 627 months; John Meuse 336; Zackular 262; Balsam 204; Arsenault 60. Balsam, Zackular and Arsenault were directed to pay restitution as well.
. Normally, we would review factual findings relating to the STA for clear error only, and legal rulings
de novo. See United States v. Santiago-Becerril,
. The STA states in pertinent part:
The following periods of delay shall be excluded in computing the time within which an information or an indictment must be filed, or in computing the time within which the trial of any such offense must commence:
*80 Any period ol delay resulting from a continuance granted by any judge on his own motion or at the request of the defendant or his counsel or at the request of the attorney for the Government, if the judge granted such continuance on the basis of his findings that the ends of justice served by taking such action outweigh the best interest of the public and the defendant in a speedy trial.
18 U.S.C. § 3161(h)(8)(A).
. The attempt to attribute the entire 206-day delay to former defense counsel's consent is an exaggeration as well. On July 3, 1995, Meuse's brother, John, filed his own pretrial motions. Since Thomas and John were to be tried jointly, John’s motions would have tolled Thomas's STA period for the "reasonable period of delay” required to dispose of John’s motions "promptly.” See 18 U.S.C. § 3161(h)(7) & (h)(1). Thomas Meuse has not attempted to demonstrate that the delay from July 1995 to January 1996 for hearing and *81 resolving John Meuse’s motions was not "reasonable."
. We review
de novo
the district court ruling rejecting the motion to dismiss the indictment.
See United States v. Stokes,
. Although we need not opine on the matter at this time, we note that the government’s decision to seal an indictment in order to gather further evidence against a defendant has been held to constitute a legitimate prose-cutorial objective under Rule 6(e).
See Richard,
. There is no conclusive evidence that the district court declined to consider the alternative seating arrangement. Moreover, the defense motion was filed before the district court ruled. Finally, defendants never sug *83 gested below that the court had overlooked their motion.
. Viewing the evidence in the light most favorable to the verdict, we assess its sufficiency
de novo
to determine whether a rational jury could find each element of the charged offense beyond a reasonable doubt.
See United States v. Guerrero,
. Rule 404(b) provides:
Evidence of other crimes, wrongs, or acts is not admissible to prove the character of a person in order to show action in conformity therewith. It may, however, be admissible for other purposes, such as proof of motive, opportunity, intent, preparation, plan, knowledge, identity, or absence of mistake or accident....
Fed.R.Evid. 404(b).
. The government points out as well that this evidence was relevant for purposes other than witness bias. For example, the evidence corroborated the Ferguson testimony that Zacku-lar had asked to become directly involved in the final robberies in 1990 in order to get money to pay for his defense in the extortion case. We may affirm the district court on any ground apparent from the record.
See United States v. Awon,
. For the same reasons, we find no abuse of discretion in admitting the evidence that Zac-kular was required, as a condition- of his pretrial release on the extortion charges, to call his pretrial services officer twice a week. This evidence corroborated Ferguson’s testimony that Zackular had placed such calls from a cellular phone, on the mornings of both the Woburn BayBank (10/90) and Capital Bank & Trust (11/90) robberies.
.First, the government asked Dion if she could recall whether Meuse had bought any "illegal substances.” The defense did not object. When she answered “Yes,” the government asked: "What do you recall?” At that point, Dion answered: “marijuana.” Only then did the defense object. The court sustained the objection, but the defense did not request a limiting instruction.
. Several days later, defense counsel claimed to have seen jurors consulting each other's notes again. The district court expressly observed, however, that it had been keeping a careful watch, but had seen no impropriety.
. Rule 608(b) provides:
Specific instances of the conduct of a witness, for the purpose of attacking or supporting the witness' credibility, other than conviction of crime as provided in rule 609, may not be proved by extrinsic evidence. They may, however, in the discretion of the court, if probative of truthfulness or untruthfulness, be inquired into on cross-examination of the witness (1) concerning the witness’ character for truthfulness or untruthfulness, or (2) concerning the character for truthfulness or untruthfulness of another witness as to which character the witness being cross-examined has testified.
Fed.R.Evid. 608(b).
. Zackular argues that the contents of the tapes did not constitute "extrinsic evidence,” since the recorded statements — albeit out-of-court — were made by Ferguson. On the contrary, extrinsic evidence includes any evidence other than trial testimony.
See United States v. MateosSanchez,
. Among the relevant factors to be considered are "the' severity of the purported misconduct, the weight of the evidence supporting the verdict, the presence and likely effect of a curative instruction, and the prosecutor's purpose in making the statement (i.e.: whether the statement was willful or inadvertent).”
Laboy-Delgado,
. Moreover, even if the comments were determined inappropriate, the district court repeatedly instructed the jury that the government, not the defendants, bore the burden of proof. See id.; supra note 19.
. After the district court twice asked if Meuse had requested that his attorney so' inform the court, Meuse could only respond: “I thought I made it clear.”
