United States v. Piccolo, 441 F.3d 1084 (9th Cir. Apr. 3, 2006) (Escape conviction under 18 U.S.C. 751(a), which includes failure to return to a non-secured halfway house, is not necessarily a crime of violence for federal armed career offender sentencing purposes). http://caselaw.lp.findlaw.com/data2/circs/9th/0410577p.pdf