Angus Houston, head of the Australian agency coordinating the search for missing Malaysian Airlines Flight MH370, points to a map as he speaks during a news conference in Perth, April 7, 2014.
A man places a candle on top of a white board set up to place messages for passengers on Flight MH370 during a candlelight vigil in Kuala Lumpur, April 6, 2014.
People place candles on a banner reading, "Pray for MH370" after a special prayer for passengers onboard the missing plane at the Malaysian Chinese Association headquarters in Kuala Lumpur, April 6, 2014.
Chinese patrol ship Haixun 01 is pictured during a search for Flight MH370, in the south Indian Ocean, April 5, 2014. (CNS photo)
The Bluefin 21, an Artemis autonomous underwater vehicle, is hoisted back on board the Australian Defence Vessel Ocean Shield after a successful buoyancy test in the southern Indian Ocean, April 4, 2014.
Relatives of Chinese passengers on Flight MH370 pray at a prayer room in Beijing, April 4, 2014.
A flight lieutenant monitors a TAC station onboard a Royal New Zealand Air Force P3 Orion during search operations for Flight MH370 in the southern Indian Ocean, April 4, 2014.