The United States Air Force (USAF) is the branch of the U.S. military primarily responsible for aerial and space operations. Established as a separate branch in 1947, it has played a crucial role in U.S. military strategy, particularly in global airpower projection. The USAF operates a diverse fleet of aircraft, including fighters, bombers, transport planes, and reconnaissance aircraft. Its missions range from aerial combat and strategic bombing to humanitarian airlift and space operations. The Air Force's emphasis on advanced technology and innovation has made it a leader in military aviation, continually pushing the boundaries of flight and space exploration.