Question: Which aircraft originally developed for USAF has been used for medical evacuation as well as SAC joint missions? 
Context: NM5 or C-NM5 is a multi-role, multi-mission aircraft being jointly developed by National Aerospace Laboratories (NAL) and Mahindra Aerospace.  It is a 5-seater civil aircraft and an extension of the Hansa project.  The NM5 has been entirely designed and developed by NAL and Mahindra Aerospace on a 50:50 partnership basis.  The NM5 can be used as a trainer, for transporting cargo, medical evacuation, tourism, VIP travel and for training pilots. Type Long March (Chang-Zheng Xing, 长征型) cargo ship, medical evacuation (hull classification symbol: APR) was a type of Chinese converted medical evacuation cargo ship (APR) of the People's Liberation Army Navy (PLAN), which was only in service for extremely short period of time in the Chinese navy before returning to civilian service. A liaison pilot was a World War II United States enlisted pilot, whose wings bore an "L" in the center.  They flew light single engine liaison aircraft.  Included were many enlisted aviation students who washed out of pilot training after having soloed and were given the opportunity to become liaison pilots.  Flight training consisted of about 60 hours of flying time and stressed such procedures as short field landings and takeoffs over obstacles, low altitude navigation, first aid, day and night reconnaissance, aerial photography, and aircraft maintenance.  Unarmored and unarmed—except perhaps for a .45 pistol or .30 carbine—these men in 28 different squadrons flew low and slow with wheels, skis, or floats.  They flew varied and often hazardous missions in nearly every theater—medical evacuation from forward areas; delivering munitions, blood plasma, mail, and other supplies to front lines; ferrying personnel; flying photographic or intelligence missions; serving as air observers for fighters or bombers; and other critical yet often unpublicized missions. The Beechcraft C-12 Huron is the military designation for a series of twin-engine turboprop aircraft based on the Beechcraft Super King Air and Beechcraft 1900.  C-12 variants are used by the United States Air Force, United States Army, United States Navy and United States Marine Corps.  These aircraft are used for various duties, including embassy support, medical evacuation, as well as passenger and light cargo transport.  Some aircraft are modified with surveillance systems for various missions, including the Cefly Lancer, RC-12 Guardrail and Project Liberty programs. The Boeing C-17 Globemaster III is a large military transport aircraft.  It was developed for the United States Air Force (USAF) from the 1980s to the early 1990s by McDonnell Douglas.  The C-17 carries forward the name of two previous piston-engined military cargo aircraft, the Douglas C-74 Globemaster and the Douglas C-124 Globemaster II.  The C-17 commonly performs tactical and strategic airlift missions, transporting troops and cargo throughout the world; additional roles include medical evacuation and airdrop duties.  It was designed to replace the Lockheed C-141 Starlifter, and also fulfill some of the duties of the Lockheed C-5 Galaxy, freeing the C-5 fleet for outsize cargo. The Strategic Airlift Capability (SAC) is a consortium of 12 nations, 10 of which are member states of NATO and two of which are Partnership for Peace (PfP) members, to pool resources in order to operate Boeing C-17 Globemaster III aircraft for joint strategic airlift purposes. The General Dynamics F-16 Fighting Falcon is a single-engine supersonic multirole fighter aircraft originally developed by General Dynamics (now Lockheed Martin) for the United States Air Force (USAF).  Designed as an air superiority day fighter, it evolved into a successful all-weather multirole aircraft.  Over 4,500 aircraft have been built since production was approved in 1976.  Although no longer being purchased by the U.S. Air Force, improved versions are still being built for export customers.  In 1993, General Dynamics sold its aircraft manufacturing business to the Lockheed Corporation, which in turn became part of Lockheed Martin after a 1995 merger with Martin Marietta. Warren L. Carpenter, born August 12, 1931 at Little Rock, Arkansas, died July 7, 2003, at Colorado Springs, Colorado, was a veteran of the U.S. Marine Corps and the U.S. Air Force with a distinguished record of service in peace and war, including serving as the Department of Defense's Chief Medical Officer for military space shuttle missions, flying 297 combat hours, serving as one of six Residents in Aerospace Medicine selected to fly on medical evacuation aircraft to bring home the U.S. prisoners-of-war from North Viet Nam on the final repatriation leg of Operation Homecoming, and earning a remarkable six Service awards for marksmanship. The Eurocopter EC635 (now Airbus Helicopters H135M) is a multi-purpose light helicopter developed by Eurocopter (now Airbus Helicopters) as a military version of the Eurocopter EC135.  It is a twin-engined aircraft and can carry up to 8 people, including the pilot, and a range of military equipment or armaments.  The helicopter is marketed for troop transport, medical evacuation, cargo transport, reconnaissance and surveillance and armed combat support missions. The Maritime Prepositioning Force (MPF) Utility Boat (MPFUB) is a commercially designed utility craft used primarily to move personnel and light equipment during MPF offload operations.  The 41 foot long, high-speed landing craft are replacing the Navy’s existing LCM-8 craft as part of the United States Navy's Improved Navy Lighterage System (INLS) in support of pre-positioned Marine Amphibious assault missions.  Additional missions include supporting waterborne force protection, transportation of personnel and materials, medical evacuation, salvage, damage control, and repair operations.
Answer: The Boeing C-17 Globemaster III