U.S. Air Force loadmasters preflight the C-17 Globemaster III for a Joint Precision Airdrop Delivery System of 40 bundles of humanitarian supplies to a drop zone in Afghanistan, Apr., 13, 2008. Loadmasters are from the 17th Airlift Squadron Charleston Air Force Base S.C., and are deployed to the 816th Expeditionary Airlift Squadron in Southwest Asia.