Douglas C-9B Skytrain II
One of the most successful twin-engine jet airliners ever the Douglas DC-9 was in continuous production from 1965 to 2006. Over time the design evolved considerably, growing steadily longer and with increasing wingspans. The DC-9 and its descendants the MD-80 and MD-90 have been so popular that they survived the demise of McDonnell-Douglas and reemerged as the Boeing 717 in the late 1990s. The U.S. Air Force adopted the DC-9 as the C-9A Nightingale in 1967 for use as a medical evacuation aircraft. The Air Force also adopted the VC-9C as a VIP transport. The U.S. Navy adopted the C-9B for general cargo and personnel transport duties.