U.S. Secretary of Defense Leon E. Panetta (right) talks with Chief Mate Fred Cullen as he takes a boat out to the USNS Richard E. Byrd in Cam Ranh Bay, Vietnam, on Sunday, June 3, 2012. (AP Photo/Jim Watson, Pool)

Photo by: Jim Watson

U.S. Secretary of Defense Leon E. Panetta (right) talks with Chief Mate Fred Cullen as he takes a boat out to the USNS Richard E. Byrd in Cam Ranh Bay, Vietnam, on Sunday, June 3, 2012. (AP Photo/Jim Watson, Pool)