A U.S. Air Force C-17 Globemaster III aircraft sits on a runway at Fort Polk, La., before picking up soldiers for an airdrop mission during a formation exercise on Dec. 15, 2010. The large formation exercise demonstrates the global projection of U.S. airpower and the mission to perform aerial refueling training. The soldiers are assigned to Task Force 1, Operations Group at the Joint Readiness Training Center.