A ground crewman stands in front of a South Korean P3 Orion after it returned from the search for missing Malaysia Airlines Flight MH370 in Perth, Australia, Sunday, March 30. Australia's Prime Minister Tony Abbott said Sunday he was hopeful clues will emerge soon to help find Flight 370 even though searchers again failed to find jet debris, as relatives of Chinese passengers on the plane protested in Malaysia to demand the government apologize over its handling of the search. Rob Griffith / AP
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