U.S. Navy Lt. j.g. Brent Nelsen, a naval aviator assigned to Patrol Squadron (VP) 16, scans the water while flying a P-8A Poseidon aircraft over the Indian Ocean April 4, 2014, during a mission 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.