International and Royal Australian Air Force (RAAF) air crews and officials, that participated in the search for missing Malaysia Airlines plane MH370, pose for a photograph on the tarmac at the RAAF Base Pearce, located north of Perth, in this picture released by the Australian Defence Force on April 29, 2014. The chance of finding floating debris from a missing Malaysia Airlines jetliner has become highly unlikely, and a new phase of the search would focus on a far larger area of the Indian Ocean floor, Australian Prime Minister Tony Abbott said. The international search effort for Malaysia Airlines Flight MH370, which vanished on March 8 with 239 people on board, has so far failed to turn up any trace of wreckage from the plane. [Photo/Agencies]