1 Air Force (U.S. Army) Black Coffee Mug

The United States Air Force (USAF) is the aerial warfare service branch of the U.S. Armed Forces. Established as an independent entity on September 18, 1947, it is one of the five branch services in the U.S. military. The USAF is responsible for air and space defense, conducting aerospace warfare, and maintaining the third-largest Air Force in the world, both in terms of personnel and aircraft fleet. Its operations include strategic bombers, fighter aircraft, unmanned aerial vehicles (UAVs), and tactical airlift. The USAF operates under the Department of the Air Force, one of the three departments of the U.S. Department of Defense. The service is headed by the Secretary of the Air Force, who reports to the President and Secretary of Defense.