Airman Mark Usi, aviation boatswain's mate, left, and Petty Officer 3rd Class Daniel Strickland, and Julian Berry, right, aviation boatswain's mates, assigned to the crash and salvage division of the air department of the Nimitz-class aircraft carrier USS Carl Vinson, wait to chock and chain an aircraft. Carl Vinson and Carrier Air Wing 17 are conducting maritime security operations and close-air support missions in the U.S. 5th Fleet area of responsibility.