A loadmaster and maintenance members conduct preflight checks on a C-17 Globemaster III before taking off on an Operation Deep Freeze winter fly-in mission Aug. 25 from Pegasus White Ice Runway, Antarctica. A C-17 and 31 Airmen from McChord Air Force Base, Wash., conducted the annual winter fly-in augmentation of scientists, support staff, food and equipment for the U.S. Antarctic Program at McMurdo Station, Antarctica. (U.S. Air Force photo/Tech. Sgt. Shane A. Cuomo)