In this photo taken from the Royal New Zealand air force (RNZAF) P-3K2-Orion aircraft, pilot and aircraft captain, Flight Lieutenant Timothy McAlevey looks out of a window while searching for debris from missing Malaysia Airlines Flight 370, in the Indian Ocean off the coast of western Australia on Sunday, April 13, 2014. The hunt for the missing Malaysian airliner continued to focus Monday on a search for weakening radio signals from deep beneath the waves despite mounting evidence that the batteries in the plane’s all-important black boxes may finally have died. (AP Photo/Greg Wood, Pool)