Established in 1947, the United States Air Force (USAF) is a branch of the U.S. Armed Forces responsible for aerial and space warfare. With a mission to fly, fight, and win in air, space, and cyberspace, the USAF operates a diverse fleet of aircraft and spacecraft, and maintains a global presence to protect national interests. The service upholds core values of integrity first, service before self, and excellence in all we do, and is committed to innovation and excellence in defense and humanitarian missions worldwide.