The dry cargo and ammunition ship USNS Cesar Chavez (T-AKE 14), right, conducts a replenishment at sea with the Australian frigate HMAS Toowoomba (FFH 156) in the U.S. 7th Fleet area of responsibility April 12, 2014, in support of the international effort to locate Malaysia Airlines Flight 370. U.S. Navy ships and aircraft were dispatched to assist a multinational search for Malaysia Airlines Flight 370, which disappeared March 8, 2014, over the Gulf of Thailand with 239 people aboard.