USNS Joshua Humphreys refuels British Royal Navy destroyer HMS Daring during an underway replenishment in the Gulf of Oman. U.S. Navy photo by MC2 Alex Forster
A civilian mariner aboard the MSC fleet replenishment oiler USNS Patuxent watches a fuel line being sent to MSC fast combat support ship USNS Supply during a replenishment at sea in the Gulf of Oman. U.S. Navy photo by MC3 Carlos M. Vazquez II
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.
Sailors aboard USS Hue City observe USS Dwight D. Eisenhower conducting a replenishment-at-sea with USNS Medgar Evers. U.S. Navy photo by MC2 Matthew R. Cole
Sailors prepare cargo transportation equipment on the flight deck of the aircraft carrier USS George H.W. Bush during a vertical replenishment with USNS Robert E. Peary. U.S. Navy photo by MC3 Justin Wolpert