The 202nd Air Defense Artillery Regiment (ADA) is a United States Army unit specialized in air defense operations. This regiment falls under the operational control of the Army Air and Missile Defense Command, part of the U.S. Army Forces Command. The 202nd ADA's primary mission is to defend army formations against airborne threats using a variety of advanced weapon systems. The regiment is composed of active duty, National Guard, and Army Reserve units, with headquarters stationed at Fort Sill, Oklahoma. The 202nd ADA has a long history, dating back to World War II, and has been involved in several significant military operations, including the Gulf War and Operation Iraqi Freedom.