Pursuant to 18 U.S.C. § 922(g), a convicted felon may not possess a firearm. Meanwhile, the Armed Career Criminal Act (ACCA) mandates a 15-year minimum term of imprisonment for “a person who violates section 922(g) ... and has three previous convictions ... for a ... serious drug offense ... committed on occasions different from one another.” Id. § 924(e)(1). Defendant Antonio de los Santos pled guilty to the offense of being a felon in possession of firearms in violation of 18 U.S.C. § 922(g)(1). Before sentencing, the Government filed notice of its intent to seek an enhanced sentence under the ACCA based on Defendant’s four prior convictions for serious drug offenses. These included one conviction for possession of cocaine with intent to distribute on or about November 10, 1992, and three convictions for distribution of cocaine occurring on or about November 2, 1992, November 16, 1992, and November 24, 1992. Defendant objected, arguing that each of these convictions arose from a single criminal episode and thus should be treated as a single conviction for purposes of § 924(e)(1). The district court orally overruled Defendant’s objection to the Government’s ACCA notice and sentenced him accordingly. The district court concluded the offenses involved were sufficiently separate and distinct. Specifically, *1219 the district court stated Defendant had a meaningful opportunity to cease his criminal conduct, but did not do so. Defendant appealed. We exercise jurisdiction under 18 U.S.C. § 3742 and affirm.
I.
On appeal, Defendant does not challenge whether his convictions qualify as “serious drug offenses” under the ACCA. Rather, he challenges
only
whether the four convictions were “committed on occasions different from one another.” We review a sentence enhancement imposed under the ACCA de novo.
United States v. Johnson,
II.
Congress’ use of the phrase “committed on occasions different from one another” “was intended to reach multiple criminal episodes distinct in time.”
United States v. Tisdale,
Defendant contends this case is distinguishable from Johnson because, unlike the defendant in Johnson, Defendant was not on a street selling cocaine to anyone who approached him. Defendant posits the drug offenses in this case were not only committed close in time, but also tied together legally and factually by a sting operation that anticipated each of the acts occurring after the initial purchase on November 2, 1992. 1 Moreover, Defendant asserts the offenses are related by way of charge and conviction, geographically, by mode of operation, by the individuals in- *1220 volved in the illegal activity, by the criminal objectives, and temporally. In other words, Defendant argues we could not conclude Defendant committed one crime and made a subsequent conscious decision to commit another crime.
We disagree. Defendant’s criminal conduct in 1992 was not a single criminal episode. The Fourth Circuit addressed a similar argument in
United States v. Letterlough,
The
Letterlough
court likewise stated the law enforcement officer’s decision not to arrest the defendant after the first sale did not prevent the court from concluding the drug sales were separate occasions.
Id.
Like the defendant in
Letterlough,
Defendant in this case “would like to assign some culpability for the [subsequent] sale[s] to the undercover officer who purchased the drugs.”
Id.
Defendant argues because the undercover officer was introduced to Defendant during the initial purchase, the additional sales would not have occurred had the introduction and sale not taken place. Because of this introduction, law enforcement continued to operate a sting that anticipated additional purchases of cocaine. Regardless, the responsibility for the crime “falls squarely” on Defendant.
Id.; see also United States v. Roach,
Notes
. In making this argument, Defendant relies upon the Presentence Investigation Report (PSR). The Government contends Defendant’s reliance on the PSR is not permitted under the modified categorical approach.
See Johnson v. United States,
— U.S. -,
. Defendant urges us to apply
United States v. Beckstrom,
. Defendant argues we should look to
United States v. Robinson,
