A C-17 Globemaster III Loadmaster, forward-based with the 304th Expeditionary Airlift Squadron at Christchurch, New Zealand, prepares to airdrop medical supplies Sept. 1, 2011, near the Amundsen-Scott South Pole Station in Antarctica. The supply drop is part of Operation Deep Freeze and in support of the U.S. Antarctic Program, which is managed by the National Science Foundation. (Courtesy photo/Chief Master Sgt. Jim Masura)