The Twentieth Air Force (20 AF) is a numbered air force of the United States Air Force Global Strike Command (AFGSC). It is headquartered at F.E. Warren Air Force Base, Wyoming. 20 AF's primary mission is Intercontinental Ballistic Missile (ICBM) operations. The Twentieth Air Force commander is also the Commander, Task Force 214 (TF 214), which provides alert ICBMs to the United States Strategic Command (USSTRATCOM).