The C-9 is a twin-engine, T-tailed, medium-range, swept-wing jet aircraft used primarily for Air Mobility Command’s aeromedical evacuation mission. The Nightingale is a modified version of the McDonnell Douglas Aircraft Corporation’s DC-9. It is the only aircraft in the inventory specifically designed for the movement of litter and ambulatory patients. The C-9A’s airlift capability to carry 40 litter patients, 40 ambulatory and four litter patients, or various combinations thereof, provides the flexibility for Air Mobility Command’s worldwide aeromedical evacuation role. A hydraulically operated folding ramp allows efficient loading and unloading of litter patients and special medical equipment. (U.S. Air Force Photo)