PACIFIC OCEAN (May 19, 2011) The Military Sealift Command fleet replenishment oiler USNS Yukon (T-AO 202) performs a replenishment at sea with the Nimitz-class aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is participating in a composite training unit exercise off the coast of Southern California. (U.S. Navy photo by Mass Communication Specialist Seaman Benjamin Crossley/Released)
