An MH-60S Sea Hawk helicopter assigned to the Chargers of Helicopter Sea Combat Squadron 14 flies over an ongoing replenishment at sea between the aircraft carrier USS John C. Stennis, left, the fast combat support ship USNS Rainier, center, and the guided-missile cruiser USS Mobile Bay in the South China Sea, March 4, 2016. The Mobile Bay is receiving an advanced biofuel mixture from Rainier. Navy photo by Petty Officer 2nd Class Andrew P. Holmes