USNS Carl Brashear (T-AKE 7) holds course alongside the amphibious assault ship USS Peleliu (LHA 5) during a refueling at-sea. U.S. Navy photo by Mass Communication Specialist 3rd Class Will Gaskill
MSC hospital ship USNS Mercy sails from a mission stop in Indonesia. U.S. Navy photo by MC2 Roadell Hickman
USNS Henry J. Kaiser (T-AO 187) conducts a replenishment at sea with the amphibious assault ship USS Boxer (LHD 4). U.S. Navy photo by MC2 Kenan O'Connor
USNS Supply conducts underway replenishments at sea with the aircraft carrier USS Enterprise and the guided-missile cruiser USS Vicksburg in the Mediterranean Sea. U.S. Navy photo by MC3 Daniel J. Meshel
MSC tanker USNS Lawrence H. Gianella sails through an icy channel past Mt. Erebus, the southernmost active volcano on Earth, on its way to deliver supplies to McMurdo Station, Antarctica.