Bomb Wing at Barksdale AFB, flying the B-52H Stratofortress. In addition, it's geographically separated 489th Bomb Group is an associate unit of the 7th Bomb Wing at Dyess AFB, flying the B-1B Lancer. If activated, it is gained by Eighth Air Force. Intercontinental ballistic missiles Twentieth Air Force is responsible for maintaining and operating the Air Force's intercontinental ballistic missile force. Designated as USSTRATCOM's Task Force 214 (TF 214), 20th Air Force provides on-alert, combat-ready ICBMs to the President of the United States. The ICBMs are on 24-hour/365-day alert and are ready to launch on any given day. AFGSC's Twentieth Air Force is the Air Force's lead command for and largest operator of UH-1N Huey helicopters. The UH-1N supports ICBM operations in missile fields controlled by F.E. Warren, Malmstrom and Minot Air Force Bases. In 2015, the 582d Helicopter Group was activated to supervise the three UH-1 squadrons. The Huey will be replaced by the Grey Wolf. Component units Air Force Global Strike Command comprises the following wings and major units. Headquarters Air Force Global Strike Command (Barksdale AFB, Louisiana) Eighth Air Force Headquarters Eighth Air Force (Barksdale AFB) 2nd Bomb Wing (Barksdale AFB) – B-52H Stratofortress 11th Bomb Squadron 20th Bomb Squadron 96th Bomb Squadron 5th Bomb Wing (Minot AFB, North Dakota) – B-52H Stratofortress 23rd Bomb Squadron 69th Bomb Squadron 7th Bomb Wing (Dyess AFB, Texas) – B-1B Lancer 9th Bomb Squadron 28th Bomb Squadron 28th Bomb Wing (Ellsworth AFB, South Dakota) – B-1B Lancer 34th Bomb Squadron 37th Bomb Squadron 509th Bomb Wing (Whiteman AFB, Missouri) – B-2A Spirit 13th Bomb Squadron 393rd Bomb Squadron 595th Command and Control Group (Offut AFB, Nebraska) 1st Airborne Command Control Squadron – E-4B Advanced Airborne Command Post 595th Aircraft Maintenance Squadron 595th Strategic Communications Squadron 625th Strategic Operations Squadron 608th Air Operations Center (Barksdale AFB) Twentieth Air Force Headquarters Twentieth Air Force (Francis E. Warren AFB, Wyoming) 90th Missile Wing (Francis E. Warren AFB) – LGM-30G Minuteman-III 319th Missile Squadron 320th Missile Squadron 321st Missile Squadron 91st Missile Wing (Minot AFB) – LGM-30G Minuteman-III 740th Missile Squadron 741st Missile Squadron 742nd Missile Squadron 341st Missile Wing (Malmstrom AFB, Montana) – LGM-30G Minuteman-III 10th Missile Squadron 12th Missile Squadron 490th Missile Squadron 377th Air Base Wing (Kirtland AFB, New Mexico) 576th Flight Test Squadron (Vandenberg SFB, California) 582nd Helicopter Group (Francis E. Warren AFB) – UH-1N Iroquois 620th Ground Combat Training