OGA is an abbreviation used in the U.S. to signify Other Government Agency. In government and military parlance it is often used to speak euphemistically of the Central Intelligence Agency. These agencies often recruit persons from special operations units in the U.S. military. Some of these units include but are not limited to Special Forces, Navy SEALs, 75th Ranger Regiment, and the U.S. Army Scouts, and are often considered to be of Tier-One capability