HELICOPTER MAINTENANCE — U.S. Navy Airman Evita Levell, an aviation machinist's mate assigned to the "Dusty Dogs" of Helicopter Anti-Submarine Squadron 7, conducts maintenance on the tail rotor of an SH-60 Seahawk in the hangar bay aboard the aircraft carrier USS Harry S. Truman in the Persian Gulf, March 16, 2005. The Truman Carrier Strike Group recently turned over its responsibilities in the Persian Gulf to the USS Carl Vinson Carrier Strike Group, following nearly four months in the gulf in support of the global war on terrorism. U.S. Navy photo by Airman Jay C. Pugh