The Boeing F/A-18 Hornet is an all-weather supersonic, twin-engined, carrier-capable, multirole combat aircraft, designed as both a fighter and ground attack aircraft (hence the F/A designation). Designed by McDonnell Douglas and Northrop, the F/A-18 was derived from the YF-17 that lost against the YF-16 in the United States Air Force's lightweight fighter program. The United States Navy selected the YF-17 for the Navy Air Combat Fighter program, further developed the design and renamed it F/A-18; the United States Marine Corps would also adopt the aircraft. The Hornet is also used by the air forces of several other nations, and formerly by the U.S. Navy's Flight Demonstration Squadron, the Blue Angels.