(D.C.Cir. 1986)). "The agency need not justify the withholding of each document with specific facts," however. Robbins Geller Rudman & Dowd LLP v. United States Sec. & Exch. Comm'n, 419 F. Supp. 3d 523, 530 (E.D.N.Y. 2019). Instead, the agency need only make a showing that "allow[s] the court to be able to `trace a