The Boeing C-17 Globemaster is a large military transport aircraft designed and developed by McDonnell Douglas in the 1980s. The aircraft was specifically developed for the United States Air Force (USAF) to carry out strategic military transport missions. The aircraft performed its first flight in September 1991 and entered service with the USAF in January 1995. After McDonnell Douglas’ merger with Boeing in 1997, the latter continued manufacturing the C-17 for nearly two decades.