U.S. Navy Lt. Cmdr. David Mims, left, and Lt. j.g. Brent Nelsen, naval aviators assigned to Patrol Squadron (VP) 16, perform preflight checks on a P-8A Poseidon aircraft before a mission in Perth, Australia, April 2, 2014. 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.