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JET ENGINE MAINTENANCE — U.S. Navy Petty Officer 3rd Class Jalvin Yuchongtian, an aviation machinist mate, inspects the cover for a J-52 jet engine aboard the aircraft carrier USS Nimitz in the Persian Gulf, July 14, 2005. The cover prevents foreign object damage to the engines during maintenance. The Nimitz Carrier Strike Group, currently on a regularly scheduled deployment, is participating in maritime security operations. U.S. Navy photo by Petty Officer 3rd Class Shannon E. Renfroe