U.S. Navy Damage Controlman 1ST Class Derrick Harney, left, observes his students in repair a pipeline during the hands-on patch training portion of the Damage Control Wet Trainer at Naval Station Mayport, Fla., on Sept. 6, 2006. The one-day class provides training in basic damage control to students in various programs as well as to personnel from U.S. Navy fleets and reserve units. (U.S. Navy photo by Mass Communication SPECIALIST 2nd Class Denise Ordonez) (Released)