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Australia bids farewell to international military personnel at Perth’s Royal Australian Air Force base on Tuesday. It came after the visual search for a missing Malaysia Airlines jetliner was called off. 

"So on behalf of all Australians and all the families of the 239 people on flight MH370, I want to thank you for your dedication¹, thank you for your efforts, and ask that you fly safely. Thank you very much," said Mark Binskin, vice² chief of Australian Defence Force.

Australian Prime Minister Tony Abbott said on Monday that the chances of finding floating debris³ from Flight MH370 had become highly unlikely. The new phase of the search will shift to underwater efforts, using equipment capable of scouring⁴ the ocean floor with sophisticated sensors⁵. 

The search for the Malaysian plane, which vanished while flying from Kuala Lumpur to Beijing on March 8 with 239 people on board, has so far failed to discover any trace of wreckage⁶. Malaysia, China, Japan, New Zealand, South Korea, Britain and the United States have been assisting Australia in conducting the most expensive search in aviation history._新闻_腾讯网