Aeromedical evacuation
Passengers board a C-17 Globemaster III May 10, 2013 at McMurdo Station, Antarctica. Airmen from Joint Base Lewis-McChord, Wash., arrived to pick up an ailing contractor working at McMurdo and transported the patient to Christchurch, New Zealand, for further medical attention. (U.S. Air Force photo/Staff Sgt. Robert Tingle)