William Cooper directly appeals after the district court 1 revoked his supervised release. Having carefully reviewed the record, we conclude that the district court did not clearly err in finding that the government demonstrated by a preponderance of the evidence that Cooper violated the conditions of his supervised release. See 18 U.S.C. § 3583(e)(3) (court may revoke supervised release if it finds by preponderance of evidence that defendant violated conditions of supervised release); United States v. Perkins, 526 F.3d 1107, 1109 (8th Cir. 2008) (fact-finding as to whether violation occurred is reviewed for clear error). Accordingly, we affirm.