A system of rollers in the floor of U.S. Air Force C-17 Globemaster III aircraft help airmen push palletized cargo onto the plane at an undisclosed air base in Southwest Asia, Nov. 3, 2010. The Aerial Port airmen inspected and palletized all cargo before shipment, from food and water to ammunition and rolling stock. (U.S. Air Force photo by Senior Airman Laura Turner/Released)