America's ICBM team fulfills a critical role in maintaining global stability and ensuring the nation's safety and security. As the nation's "Unwavering Sentinel," the Airmen of Twentieth Air Force and their ICBM predecessors have remained on continuous, around-the-clock alert since 1959. 20 AF MissionDefend the United States with combat ready nuclear forces; on order, conduct global strike.20 AF VisionThe world's most respected and feared global strike team, always ready to strike.20 AF Priorities-Build integrated lethality-Develop and care for Airmen and families-Lead nuclear surety and weapon system safetyOrganizationTwentieth Air Force oversees three ICBM wings and one nuclear operations support wing:- 90th Missile Wing at F.E. Warren AFB, Wyo.- 91st Missile Wing at Minot AFB, N.D.- 341st Missile Wing at Malmstrom AFB, Mont.- 377th Air Base Wing at Kirtland AFB, N.M. And one geographically Separated Unit:- 582d Helicopter Group at F.E. Warren AFB, Wyo.