ment evidence or documents that the defense may use to refresh a witness's recollection during the government's case-in-chief. See United States v. Medearis, 380 F.3d 1049, 1057 (8th Cir. 2004) (Rule 16(b)(1)(A) does not require disclosure of impeachment evidence); United States v. Moore, 208 F.3d 577,

d 577, 579 (7th Cir. 2000) (same); United States v. Haffield, No. 06 Cr. 550 (JS), 2009 WL 10673619, at *1-2 (E.D.N.Y. Apr. 22, 2009) (same) (citing Medearis and Moore); see also United States v. Gray-Burriss, 791 F.3d 50, 57-58 & n.2 (D.C. Cir. 2015) (using documents to refresh recollection of governmen

e in each case."). Indeed, as the Eighth Circuit has observed, "general deterrence ... is one of the key purposes of sentencing...." United States Medearis. 451 F.3d 918. 920-21 (8th Cir.2006) (quotations omitted). This is particularly compelling in the child pornography context, as the Seventh Circui