OGA
 n.— «Prisoners were identified to military police by names such as “OGA 1” and “OGA 2.” The acronym, used by Defense officials to describe the CIA, stands for “other government agency.”» —“CIA May Have Held 100 ‘Ghost’ Prisoners” by John Hendren in Washington, D.C. Los Angeles Times Sept. 10, 2004. (source: Double-Tongued Dictionary)