What is the substantive reasonableness of a sentence under a particularly deferential abuse of discretion standard?

We review the substantive reasonableness of a sentence under a "particularly deferential" abuse-of-discretion standard, United States v. Broxmeyer, 699 F.3d 265, 289 (2d Cir. 2012),² which we will identify "only in exceptional cases where the [district]

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court's decision cannot be located within the range of permissible decisions," United States v. Cavera, 550 F.3d 180, 189 (2d Cir. 2008) (en banc) (internal quotation marks omitted), that is, where a sentence "was shockingly high, shockingly low, or otherwise unsupportable as a matter of law," United States v. Rigas, 583 F.3d 108, 123 (2d Cir. 2009).