An SA-330 Puma helicopter assigned to the dry cargo and ammunition ship USNS Cesar Chavez (T-AKE 14) prepares to transport personnel aboard the Australian replenishment oiler HMAS Success II (OR 304) April 13, 2014, in the U.S. 7th Fleet area of responsibility during 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.