U.S. sailors and contractors aboard the aircraft carrier USS Nimitz (CVN 68) prepare a trailer for Carrier Strike Group 11's admiral's barge as it is loaded onto Nimitz at Naval Air Station (NAS) North Island, Coronado, Calif., April 28, 2012. Nimitz arrived at NAS North Island to embark Carrier Air Wing (CVW) 11 in preparation for flight deck certification. (U.S. Navy photo by Mass Communication Specialist 3rd Class Ian Cotter)