Tolong jelaskan mengenai Angkatan Udara Kedua Puluh

Angkatan Udara Kedua Puluh (, 20 AF) adalah sebuah angkatan udara bernomor dari Air Force Global Strike Command (AFGSC, Komando Serangan Global Angkatan Udara) Amerika Serikat. Ini bermarkas besar di Pangkalan Angkatan Udara Francis E. Warren, Wyoming.

Misi utama 20 AF adalah operasi-operasi Intercontinental Ballistic Missile (ICBM, Misil Balistik Antar-Benua). Komandan Twentieth Air Force juga merupakan Komandan, Task Force 214 (TF 214), yang menyediakan ICBM kepada United States Strategic Command (USSTRATCOM, Komandan Strategis Amerika Serikat).

Birdsall, Steve. Saga of the Superfortress: The Dramatic Story of the B-29 and the twentieth Air Force. London: Sidgwick & Jackson, 1981. .

Dorr, Robert F. B-29 Superfortress Units of the Korean War. Botley, Oxford, UK: Osprey Publishing, 2003. .

Dorr, Robert F. B-29 Units of World War II. Botley, Oxford, UK: Osprey Publishing, 2002. .

Freeman, Roger A. Boeing B-29 Superfortress U.S.A.A.F. 1942–1945 (Camouflage & Markings No. 19). London: Ducimus Books, 1970.

Marshall, Chester. Warbird History: B-29 Superfortress. Osceola, Wisconsin: Motorbooks International, 1993. .

Maurer, Maurer. Air Force Combat Units Of World War II. Maxwell Air Force Base, Alabama: Office of Air Force History, 1983. .

Rhodes, Richard. The Making of the Atomic Bomb. Simon and Schuster, 1986. .

Rust, Kenn C. Twentieth Air Force Story...in World War II. Temple City, California: Historical Aviation Album, 1979. .

US ARMY History: Control of Army Air Operations Overseas  in Washington Command Post:The Operations Division. United States Army Center of Military History. CMH Pub 1-2.

US ARMY History: QUADRANT Conference