The McDonnell Douglas (now Boeing) T-45 Goshawk is a highly modified version of the British BAE Systems Hawk land-based training jet aircraft. Manufactured by McDonnell Douglas (now Boeing) and British Aerospace (now BAE Systems), the T-45 is used by the United States Navy as an aircraft carrier-capable trainer. The T-45 Goshawk has its origins in the mid-1970s, during which time the U.S. Navy formally commenced its search for a new jet trainer aircraft to serve as a single replacement for both its T-2 Buckeye and A-4 Skyhawk trainers.During 1978, the VTXTS advanced trainer program to meet this need was formally launched by the U.S. Navy. An Anglo-American team, comprising British aviation manufacturer British Aerospace (BAe) and American aircraft company McDonnell Douglas (MDC), decided to submit their proposal for a navalised version of the land-based BAE Systems Hawk trainer.