How do we review sentencing determinations for both substantive and procedural reasonableness?

We review sentencing determinations for both substantive and procedural reasonableness. United States v. Cavera, 550 F.3d 180, 189-90 (2d Cir. 2008) (en banc). Likewise, "[w]e review the district court's decision to admit or exclude expert testimony under a highly deferential abuse of discretion standard." Zuchowicz v. United States, 140 F.3d 381, 386 (2d Cir. 1998). In undertaking this review, we assume the parties' familiarity with the facts and the record of prior

Page 3

proceedings, which we reference only as necessary to explain our decision to affirm the district court's decision.