mended (Aug. 22, 2018). Accordingly, "the government's burden is a light one." ACLU v. U.S. Dep't of Del, 628 F.3d 612, 624 (D.C. Cir. 2011).' II. The FBI Conducted an Adequate Search for Responsive Records "If an agency demonstrates that it has conducted a reasonable search for relevant documents, it has fulfilled its obligations under FOIA and is ent