Aviation Boatswain's Mate (Fuel) 3rd Class Joshua Kuhl, from Hazel Green, Wis., closes a JP-5 fuel valve while conducting fuel tank purification aboard the aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is deployed to the U.S. 5th Fleet area of responsibility conducting maritime security operations, theater security cooperation efforts and support missions for Operation Enduring Freedom. (U.S. Navy photo by Mass Communication Specialist 2nd Class Charlotte C. Oliver/Released)