The defendant in this arson case stands convicted by a jury of conspiracy and arson under 18 U.S.C. §§ 371 and 844(i), respectively. For the reasons stated herein, we affirm the decision of the district court on all points.
I. BACKGROUND
On the evening of February 6, 1989, the Boston Fire Department responded to a multiple-alarm fire at 295-297 Franklin Street (the “Building”), in Boston, which was owned by Jack Gateman (“Gateman”). At that time, the defendant, James L. Mitchell (“Mitchell”), was a tenant occupying the Building’s second, third and fourth floors, where he and his partner, Allen Gallant (“Gallant”), ran a private social club known as “Club 297” (the “Club”). The Club had been ordered closed by the City of Boston for violation of City codes in January 1989. On the day of the fire, several men, including Ronald Wallace (“Wallace”), had been working on repairs at the Club. Wallace testified at trial that during the course of that day Mitchell told him he would pay him $11,000 to set fire to the Building, making an initial payment. Mitchell returned to his home in Vermont, while Wallace returned to the Club. Mitchell called the Club from his car telephone, and spoke to Wallace, who testified that Mitchell asked him whether he would set the fire. After the phone call, Wallace went to the fourth floor of the Building and set some mattresses stacked there on fire. He and the other men in the Club fled the Building.
Over the next months, Mitchell wired Wallace sums of money through Western Union. Evidence was entered that Gallant reported the loss the Club suffered in the fire to the Club’s insurance broker, and pursued the claim through an insurance broker. Testimony at trial established that some $59,400 *803 was paid out on the Club’s policies, most of which went to the Internal Revenue Service.
In November 1991, Mitchell was charged under a twenty-two count indictment with conspiracy, arson, use of fire to commit a felony, and wire fraud. He was prosecuted on six of those counts. After a jury trial, he was found guilty on the conspiracy and arson charges, but acquitted of the remaining counts. This appeal ensued.
II. ADMISSION OF SEIZED EVIDENCE
The district court adopted the report and recommendation of the magistrate judge, who found the following facts.
See United States v. Martínez-Molina,
On appeal, Mitchell challenges the trial court’s admission of the evidence seized by Lt. Burrill, on the basis that there were no exigent circumstances justifying his entrance without a warrant. 1
A. Waiver
The United States claims that Mitchell waived the right to appeal the admission of this evidence by failing to object within ten days to the magistrate judge’s report and recommendation on the defendant’s Motion to Suppress the Physical Evidence. See Rule 3(b), Rules for United States Magistrates in the United States District Court for the District of Massachusetts. As the report and recommendation of the magistrate judge itself pointed out, we have repeatedly indicated that failure to comply with Rule 3(b) precludes review by this court.
See, e.g., United States v. Valencia-Copete,
Mitchell now maintains that his objection to the evidence seized by Lt. Burrill has been saved from waiver despite his failure to object because, subsequent to the report and recommendation, the district court issued an order stating it would reconsider the suppression issue as regards the evidence seized by Lt. Burrill. In that order, the district court requested, among other things, that Mitchell identify the portions of memoranda and evidence the court should consider in *804 deciding the motion to suppress the evidence seized. All of the seized evidence offered was admitted at trial. We need not delve into the intricacies of whether the district court order effectively revived Mitchell's motion to suppress the evidence seized by Lt. Burrill, however, as we find that the district court did not err in admitting the disputed evidence.
B. Analysis of Search and Seizure Issues
Traditionally, in the context of a motion to suppress, we have reviewed the district court’s findings of fact, as well as any mixed findings of law and fact, for clear error.
See United States v. Schiavo,
Our analysis is framed by two Supreme Court decisions:
Michigan v. Tyler,
The analysis in
Michigan v. Tyler
controls our decision. In
Tyler,
a fire broke out in a furniture store shortly before midnight; the fire had been reduced to “smoldering embers” when the Fire Chief reported to the scene at 2:00 a.m.
Id.
at 501,
Rejecting the premise that “the exigency justifying a warrantless entry to fight a fire ends, and the need to get a warrant begins, with the dousing of the last flame,”
id.
at 510,
departed at 4 a.m. and returned shortly after daylight to continue their investigation. Little purpose would have been served by their remaining in the building, except to remove any doubt about the legality of the warrantless search and seizure later that same morning. Under these circumstances, we find that the *805 morning entries were no more than an actual continuation of the first____
Id.
at 511,
The facts here closely parallel those of
Tyler.
Lt. LeBlanc entered the scene after the fire was “put down,” and within roughly an hour of the time the fire was reported, in order to determine the cause and origin of the fire. The investigation was hampered by the lack of light and by the presence of water on the floor: photographs could not be taken. The following morning, between 8:00 and 9:00 a.m., roughly twelve hours after the fire had been reported, Lt. Burrill entered the scene in order to take additional samples. He removed the water and debris from the fourth floor, and then seized two sections of flooring, the challenged evidence. These facts speak for themselves: Lt. BurrilTs search and seizure was clearly a continuation of the first search by Lt. LeBlanc. Unlike in
Tyler,
of course, the same individual did not conduct both searches, but both fire officials were of the same Fire Investigation Unit. Ultimately, as in
Tyler,
the “investigation of the fire’s origin was [ ] temporarily suspended on account of the conditions on the scene and resumed at the first opportunity when the conditions hampering the investigation subsided.”
Clifford,
That Lt. BurrilTs morning entrance onto the premises was in fact a continuation of the nighttime search is underscored by the distinctions the Court drew between its decision in
Clifford
and its
Tyler
holding. In
Clifford,
a fire broke out in a private residence and the fire department reported to the scene at about 5:42 in the morning. The fire was extinguished, and the fire officials and police left the premises at 7:04 a.m. At about 1:00 p.m. that afternoon a fire investigator arrived at the scene, having been informed that the fire department suspected arson. Despite the fact that the house was being boarded up on behalf of the out-of-town owners, the Cliffords, and despite their knowledge that the Cliffords did not plan to return that day, the fire investigator and his partner searched the house. After determining that the fire had been set in the basement, and how, the investigators searched the entire house, taking photographs.
Id.
at 289-91,
Between the time the firefighters had extinguished the blaze and left the scene and the arson investigators first arrived about 1:00 p.m. to begin their investigation, the Cliffords had taken steps to secure the privacy interests that remained in their residence against further intrusion. These efforts separate the entry made to extinguish the blaze by that made later by different officers to investigate its origin. Second, the privacy interests in the residence—particularly after the Cliffords had acted—were significantly greater than those in the fire-damaged furniture store [in Tyler ], making the delay between the fire and the mid-day search unreasonable absent a warrant, consent, or exigent circumstances.
Id.
at 296,
In Clifford the Court laid out three factors for analyzing the constitutionality of warrant-less searches of fire-damaged premises:
*806 whether there are legitimate privacy interests in the fire-damaged property that are protected by the Fourth Amendment; whether exigent circumstances justify the government intrusion regardless of any reasonable expectation of privacy; and, whether the object of the search is to determine the cause of the fire or to gather evidence of criminal activity.
Clifford,
Mitchell focuses his argument on the second factor, exigent circumstances. As he notes, at the time Lt. Burrill entered the grounds, the fire was out, there were no people in the building, and there was no danger of further damage, or of flammable materials being present. However, the Court has clearly established that “officials need no warrant to remain in a building for a reasonable time to investigate the cause of a blaze after it has been extinguished.”
Tyler,
The third Clifford factor examines the purpose of the search. Here, the district court adopted the magistrate judge’s finding that Lt. LeBlanc entered the site to determine the cause and origin of the fire, and that Lt. Burrill “was dispatched to the scene for the purpose of taking additional samples.” The lower court concluded that there was no showing that the fire department suspected arson when Lt. Burrill was sent to the scene of the fire. Indeed, Lt. LeBlanc was only one of three investigators on the scene, and no evidence was presented that the other investigators shared his opinions, much less that any of them communicated their impressions to Lt. Burrill.
In his brief, however, Mitchell seems to challenge that finding, stating that Lt. Bur-rill 2 “entered the premises without a warrant specifically to look for and seize evidence of arson.” (Brief of Appellant, p. 14). Mitchell’s counsel contended at oral argument that the magistrate judge’s finding that Lt. Bur-rill did not suspect arson was improbable, and that common sense should indicate that Lt. LeBlanc communicated his findings to Lt. Burrill. We disagree. Lt. Burrill testified that as soon as he started his shift he was sent to the scene, and that “[f]requently after a fire has occurred at night, they send the day crew to the scene ... because of the benefit of daylight, it [is] easier to get samples.” (Day 1, p. 96). Lt. LeBlanc, in turn, testified that the Fire Investigation Unit reported to the fire because it was a multiple-alarm fire, to which the Unit’s response is automatic. Based on this testimony and our deferential standard of review, we see no reason to find that the court erred in its finding of fact.
Based on the above, we affirm the district court’s refusal to suppress the evidence from Lt. Burrill’s search.
III. ADMISSION OF THE TAPED CONVERSATIONS
Prior to and after the fire, Mitchell tape-recorded a series of telephone conversations he had with other people, including Wallace *807 and Gallant, without their consent or knowledge. Excerpted portions of three of these tapes were admitted at trial. On appeal, Mitchell argues that the district court committed reversible error in limiting the use of the tapes, for two reasons. First, he maintains, the taped conversations were admissible to show bias and inconsistent testimony. Second, he contends that all the tapes, not just fragments of them, were admissible for purposes of impeachment. As he does not specify, in either his brief or at oral argument, which tapes he actually seeks to enter, why each portion should be played, or the purpose for which each excerpt not previously admitted should now be allowed, we limit our discussion to those tapes actually entered at trial. 3
A. The Legal Framework
A party waives a right when it makes an ‘“intentional relinquishment or abandonment’ ” of it.
United States v. Olano,
[m]ere forfeiture, as opposed to waiver, does not extinguish an “error” under Rule 52(b).... If a legal rule was violated during the District Court proceedings, and if the defendant did not waive the rule, then there has been an “error” within the meaning of Rule 52(b) despite the absence of a timely objection.
Id.
at 733-34,
B. The Tapes
1. The February 7, 1989 Tape
Mitchell recorded two conversations between himself and Wallace on February 7, 1989. Defendant sought to enter portions *808 from that tape as evidence of prior inconsistent statements. At a hearing on the admissibility of the tape outside of the jury’s presence, the following colloquy ensued (Mr. Prince is the defense counsel, Mr. Cloherty the prosecutor).
THE COURT: .... Mr. Cloherty, what is the Government’s position on playing all of the February 7 tape with the exception of the two edits we discussed?
MR. CLOHERTY: We would want the entire tape played with the exception of those edits.
THE COURT: And that remains agreeable to the defendant?
MR. PRINCE: Yes, Your Honor, and Mr. Cloherty and I will edit the conversation.
(Day 5, pp. 112-13). At the start of the next day of trial, the court asked the attorneys whether the tapes had been “edited to [their] mutual satisfaction”; Mitchells counsel did not disagree when the prosecution stated that they had. (Day 6, p. 5). Nor did he object when the tapes were offered.
Clearly, Mitchell has waived any objection to the court’s failure to play the entire tape. Not only did he not object to the use of the tape, but he affirmatively stated that he was agreeable to the use of the edited tape—there was a “direct inquiry from the court” and an “unequivocal assent” from counsel for the defense.
Marder,
2. The February 1, 1989 Tape
Mitchell next sought to introduce excerpts from a conversation taped between Mitchell and Gallant prior to the fire. He offered the dialogue, which discussed re-opening the Club, as evidence of his then-existing state of mind. See Fed.R.Evid. 803(3). The court stated that the entire tape could not be played, on the basis that most of it was irrelevant and inadmissible. However, the next day, based on a transcript indicating what excerpts the defendant wanted to use, and which of those the government objected to, the court admitted all the excerpts Mitchell requested. Mitchell now appears to contend that the entire tape should have been admitted.
Had Mitchell merely submitted the entire tape, and the court only admitted excerpts, the defense’s failure to object that the remainder of the tape was not submitted to the jury may only have resulted in forfeiture,
Olano,
3. The February 11, 1989 Tape
The third tape discussed at trial was a February 11, 1989, recording of Mitchell’s conversation with his partner Gallant about whether the Club had insurance at the time of the fire. At a hearing on the tape’s admissibility prior to Gallant’s testimony, the court characterized it as “a really transparent effort by the defendant, Mr. Mitchell, knowing that he was accused of setting the arsons [sic], ... [to say] all sorts of things that would be very inadmissible and also things of doubtful admissibility on the stand.” (Day 9, p. 7). Accordingly, the court ruled that the tape was inadmissible to prove state of mind under Fed.R.Evid. 803(3), as the conversation occurred after the fire. The defense objected on the basis that the tape was in fact relevant to the defendant’s state of mind regarding the alleged wire fraud, and the court reconsidered its ruling. Accordingly, it requested a marked-up transcript of the por *809 tions of the tape the defense sought to admit on that basis, so it could “see what is at issue.” (Day 9, p. 141).
The next day, the court held that the first of the two marked pages defendant submitted could be admitted; it was read to the jury later that day, without a limiting instruction. The court also allowed the second submitted page to be entered, but as a prior inconsistent statement, and gave a limiting instruction to the jury. Defense counsel did not object to the court’s rulings. For the same reasons discussed above, as the only portions of the tape the defense actually submitted to the court were entered, and there was no objection entered, we find that the defense waived any appeal that the remainder of the tape should have been admitted. See id.
As we find that the defendant has waived the right to argue that these three tapes should have been admitted in their totality, we need not consider his contentions that they were admissible to show bias and inconsistent testimony or for purposes of impeachment.
IV. THE JURY INSTRUCTIONS
Mitchell challenges the district court’s jury instructions regarding the conspiracy charge. We review the propriety of jury instructions for abuse of discretion.
United States v. Cassiere,
Count I of the indictment alleged that Mitchell conspired with Wallace to violate the arson statute, see 18 U.S.C. § 844(i), and the wire fraud statute, see 18 U.S.C. § 1343. 5 The charge was made in the conjunctive. The district court, however, instructed the jury in the disjunctive:
The first count charges a conspiracy to commit arson and a conspiracy to commit wire fraud.
In order to prove the defendant is guilty of Count 1, the government doesn’t have to prove that any demonstrated conspiracy had both laws or a violation of both laws as its object.
It’s sufficient that the government prove either the conspiracy to commit arson or the conspiracy to commit wire fraud.
But you have to unanimously agree. That is essential. When you deliberate, all 12 of you have to agree on everything. So it would be insufficient if six of you thought there was a conspiracy to commit arson and six of you thought there was a conspiracy to commit wire fraud. You have to unanimously agree, or try to.
But if you agree unanimously that a conspiracy to violate one of those statutes has been proven beyond a reasonable doubt, that’s sufficient to find the defendant guilty on Count 1.
(Day 12, pp. 159-60). 6 Mitchell contends that the court’s instruction that finding him guilty of one of the two conspiracies is sufficient impermissibly broadened the allegations in Count I so as to create, in effect, two conspiracy counts. 7
In answering defendant’s argument we take our lead from the Supreme Court. In
*810
Griffin v. United States,
Mitchell does not frame his argument in terms of
Griffin
and its progeny, however. Rather, he seems to make two intertwined arguments. First, he contends that Count I must be read to charge him with only one offense, namely, agreeing to burn the Building and using interstate wire facilities to transfer money to Wallace. The instructions, he maintains, expanded this offense into two, opening him up to the danger of being convicted on facts different from those charged. A “court may not substantially amend the indictment through its instructions to the jury.”
United States v. Stewart Clinical Lab., Inc.,
*811
This argument is substantially answered by our discussion of
Griffin
above. It is manifest that the district court instruction that the jury could find Mitchell guilty on Count I if the government proved either of the objects of the conspiracy complies with
Griffin. See Griffin,
Second, although he never states it in so many words, Mitchell seems to contend that there was insufficient evidence to prove the wire fraud charge of the conspiracy, and thus the jury verdict was against the weight of the evidence. As we have established that “ ‘a guilty verdict on an indictment charging several acts in the conjunctive, ... stands if the evidence is sufficient with respect to any one of the acts charged,’ ”
Griffin,
V. THE MOTION FOR ACQUITTAL
Mitchell's next contention also centers on the evidence—or lack thereof—regarding the alleged conspiracy to commit wire fraud. 18 U.S.C. § 1343.
10
He posits that the district court committed reversible error in denying his motion for judgment of acquittal because there was no evidence that the defendant filed, or caused to be filed, an insurance claim. As he does not specify which count or counts he contends should be reversed, we focus on Count I, the conspiracy count, as this evidence clearly goes to the insurance fraud claim, not the arson claim. We review Mitchell’s “challenge to the evidentiary sufficiency of the government’s case by examining “whether the total evidence, taken in the light most amicable to the prosecution, together with all reasonable inferences favorable to it, would allow a rational factfinder to conclude beyond a reasonable doubt that the defendant was guilty as charged.’”
United States v. Castro-Lara,
Essentially, Mitchell argues the following. To prove wire fraud the Government had to prove: “1) a scheme to defraud by means of false pretenses, 2) the defendant’s knowing and willful participation in the scheme with the intent to defraud, and 3) the use of interstate wire communications in furtherance of the scheme.”
Cassiere,
Even if we accept all of his contentions as true, at most they establish that there was insufficient evidence to find Mitchell guilty of the wire fraud object of the conspiracy charge. As we have noted, “ ‘if a jury returns a guilty verdict on an indictment charging several acts in the conjunctive,’ ” as the arson and wire fraud charges were made here, “ ‘the verdict stands if the evidence is sufficient with respect to any one of the acts charged.’”
Griffin,
VI. MITCHELL’S SENTENCE
Mitchell's final contention on appeal is that the district court erred by enhancing his Basic Offense Level 12 (“B.O.L.”) by four points: two points for his role in the offense as an organizer, leader, manager or supervisor, see U.S.S.G. § 3B1.1(c), and two points *813 for obstruction of justice, see U.S.S.G. § 3C1.1. After noting our standard of review, we address each of these enhancements in turn. For the reasons given below, we affirm the sentence given by the district court.
A. Standard of Review
“When we review a district court’s application of a sentencing guideline, we utilize a bifurcated process. First, we review the guideline’s legal meaning and scope
de novo.
Next, we review the court’s factfinding for clear error, giving due deference to the court’s application of the guidelines to the facts.”
United States v. Thompson,
B. Manager or Supervisor of a Criminal Activitg
The district court enhanced MitcheU’s B.O.L. because it found he acted as Wallace’s organizer in committing the crime.
See
U.S.S.G. § 3Bl.l(c).
13
In order to apply section 3Bl.l(c), a court must first determine that there were at least two participants in the crime.
See United States v. Akitoye,
“The second requirement for the application of section 3Bl.l(c) is that the defendant exercised control over, or was otherwise responsible for organizing the activities of, at least one other individual in committing the crime.”
Akitoye,
Mitchell seeks to rely on the Second Circuit’s decision in
United States v. McGregor,
C. Obstruction of Justice
The district court concluded that Mitchell obstructed justice through his use of his tape recordings to attempt to cover up the conspiracy to commit arson, finding that they were made in an effort to create a false record, and were “intended to mislead authorities investigating this case and to deceive the jury, indeed, a judge, should the matter develop to that point.” (Sentencing hearing, at 45). The court accordingly increased the B.O.L. by two additional points. See U.S.S.G. § 3C1.1. 15 In his brief, Mitchell does not contest the district court’s factual findings. Instead, he makes three arguments designed to show that his use of the tapes did not rise to the level of obstruction required to apply this section. We address each in turn.
First, Mitchell points out that the investigation was not obstructed in any manner, as the investigators did not know of the tapes’ existence until after his arrest. They were not misled by them in any way.
See United States v. Manning,
Mitchell’s second argument is that his use of the tapes did not thwart the administration of justice, since there was no intimidation of the witnesses, and no attempt to prevent them from testifying at trial. This, too, is a red herring, since intimidating or influencing a witness is not required in order to find obstruction of justice under section 3C1.1. Of course, it is one method that the commentary to that section notes may provide a basis for finding a defendant obstructed justice, see U.S.S.G. § 3C1.1 comment. (n. 1(d)), but the commentary’s list is, by its terns, not exclusive.
Finally, Mitchell argues that his use of the tapes does not qualify for an enhancement under section 3C1.1 because he did not use them as an affirmative weapon, since they were only used for impeachment purposes. The trial court’s decision, he maintains, seeks *815 to punish passive, defensive conduct designed to protect the cross-examination process. However, as the Government points out, Mitchell's use of the tapes was not passive. He used portions of the February 1 and February 11 tapes to demonstrate his state of mind, and used the February 7 tape to cross-examine Wallace.
Indeed, Mitchell does not challenge the district court’s factual finding that the tapes were made in an attempt to create a false record, and we find no clear error in the court’s finding. Given that, the court’s application of section 8C1.1 was clearly proper. As the current commentary to that section notes, “producing or attempting to produce a false ... record during a ... judicial proceeding” rises to the level of obstructing justice. U.S.S.G. § 3C1.1 comment, (n. 3(c)) (1995);
see
U.S.S.G. § 3C1.1 comment, (n. 1(c)) (1987) (“producing or attempting to produce an altered, forced, or counterfeit ... record during a ... trial” may be a basis for applying § 3C1.1);
see, e.g., United States v. Rojo-Alvarez,
VII. CONCLUSION
For the reasons stated above, the decision of the district court is affirmed.
Notes
. Although he does not clearly state that his appeal is limited to the evidence admitted from Lt. Burrill’s search, Mitchell’s argument does not address the other two searches, and so we limit otur analysis to Lt. Burrill’s search and seizure. We note in passing, however, that even if Mitchell has not waived the right to object to the admission of the evidence from the other searches,
see infra,
the district court undoubtedly did not err in admitting that evidence, for the very reasons pronounced by the magistrate judge. First, Lt. LeBlanc’s search was constitutional under the rationale of
Michigan v. Tyler,
. In fact, defendant's brief refers to nameless "Boston Fire Department Inspectors” who entered the building on the day following the fire. As Lt. Burrill is the only official fitting that description who seized evidence at issue here, we assume that defendant was describing him.
. Mitchell's counsel stated that there were twenty-one tapes in all, with roughly twenty-eight hours of recordings. Three tapes were actually entered at trial, but two other tapes were discussed. First, defense counsel offered a tape of a conversation between Mitchell and David Collins, an insurance broker, in his cross-examination of Collins during voir dire outside the jury’s presence, in order to refresh his recollection and knowledge. At the prosecution objection to the tape being played, and after some discussion, the court excused the witness for the day so that the prosecution could hear the tape. The next day, the following colloquy ensued (Mr. Prince is defense counsel; Mr. Cloherty is the prosecutor):
THE COURT: .... Now, with regard to the Collins’ [sic] telephone call, have you heard that tape?
MR. CLOHERTY: Yes, Your Honor.
MR. PRINCE: We have resolved that issue, Your Honor.
MR. CLOHERTY: Mr. Prince isn't going to play it. That’s withdrawn.
THE COURT: All right.
(Day 9, p. 12). Since the tape was withdrawn, we do not consider it here. Similarly, there was some discussion of a tape recorded on February 8, 1989, but defense counsel ultimately stated to the court that he would not be offering anything from that tape, and so we do not address it here.
. In
United States v. Taylor,
we stated that the "raise-or-waive rule is not absolute. But, rescue missions are restricted to the correction of ‘plain’ errors,”
. The remaining five counts charged Mitchell with arson, wire fraud, and use of a fire to commit a felony. See 18 U.S.C. §§ 844(i), 1343, & 844(h).
. Mitchell specifically objected to the instruction at the close of the charge.
.In making this argument, Mitchell adds that the jury was left to speculate as to whether Mitchell conspired to commit arson with Wallace, to commit wire fraud with Wallace, and possibly Gallant, or to commit both charges involving Gallant. Neither the indictment nor the jury instructions mention Gallant, however.
. There is an important exception to the rule discussed in
Griffin,
however.
“Griffin
distinguishes cases ... which concern convictions that may have rested on a basis that was not supported by the evidence, from those concerning convictions possibly resting on an invalid ground as a result of an error of law."
Nieves-Burgos,
. Mitchell lists the elements the Government had to prove for both objects of the conspiracy, but the only evidence he actually questions, regarding the use of interstate wire facilities, goes solely to the wire fraud claim.
In a footnote, Mitchell also argues that the court expanded the conspiracy's scope "by allowing the Government to argue that Mitchell caused. Gallant to file false and fraudulent information with the insurance company." (Appellant’s Brief, p. 34 n. 39). He maintains that the Government was allowed to prove its case against Mitchell by showing (1) that he was partners with Gallant, and (2) that Gallant filed a claim for insurance proceeds without Mitchell's assistance. As this argument also goes solely to the sufficiency of the evidence regarding wire fraud, and there is no challenge to the sufficiency of the evidence on the conspiracy to commit arson charge, we need not address it.
. That section states, in pertinent part:
Whoever, having devised or intending to devise any scheme or artifice to defraud, or for obtaining money or property by means of false or fraudulent pretenses, representations, or promises, transmits or causes to be transmitted by means of wire, radio or television communication interstate or foreign commerce, any writings, signs, signals, pictures or sounds for the purpose of executing such scheme or artifice, shall be fined under this title or imprisoned not more than five years, or both.
18 U.S.C. § 1343.
. Mitchell argues that the court erred in allowing the letter sent by Garguilo in evidence under the "business records” exception to the hearsay rule,
see
Fed.R.Evid. 803(6), because Garguilo did not testify regarding the authenticity of the letter or its accuracy, and there was no testimony regarding what happened to the letter after Collins received it. However, Sharon Motyl, a claims technician for Insurance Innovators, testified that the claims files were maintained in the ordinary course of business and included documents received from a third party. She specifically stated that the Garguilo letter was maintained as part of the pertinent claim file in the ordinary course of business. Given this, we doubt that the district court abused its discretion in admitting the letter.
See United States v. Moore,
. As the sentencing guidelines in effect at the time of the sentencing were more onerous than those in effect at the time of the offense (Oct. 15, 1988), the district court applied the latter set of guidelines. The court found a base offense level of 6, see U.S.S.G. § 2K1.4(a), and enhanced it 18 levels for knowing creation of a substantial risk of death or serious bodily injury, see U.S.S.G. § 2K1.4(b)(1). With the disputed enhancements, the total adjusted offense level was 28.
. At the time of the offense that section stated:
If the defendant was an organizer, leader, manager, or supervisor in any criminal activity [involving four or fewer participants], increase by 2 levels.
U.S.S.G. § 3B1.1(c) (1987).
. Mitchell’s point that he did not conduct other criminal activily in concert with Wallace is irrelevant: when weighing application of section 3Bl.l(a), the sentencing court looks to the criminal activity charged.
See, e.g., Balogun,
. At the time of the offense that section stated:
If the defendant willfully impeded or obstructed, or attempted to impede or obstruct the administration of justice during the investigation or prosecution of the instant offense, increase the offense level ... by 2 levels.
U.S.S.G. § 3C1.1 (1987).
