of each category would interfere with enforcement proceedings." Tipograph v. Dept of Just., 83 F. Supp. 3d 234, 239 (D.D.C. 2015) (quoting Bevis v. Dep't of State 801 F.2d 1386, 1389-90 (D.C.Cir. 1986)). "The agency need not justify the withholding of each document with specific facts," however. Robbins Geller