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This picture taken from aboard a flying Soviet-made AN-26 used as a search aircraft by Vietnamese Air Force to look for missing Malaysia Airlines flight MH370, shows a crew member taking part in the search operations over the southern seas off Vietnam on March 9, 2014. Malaysia on March 9 launched a terror probe into the disappearance of a Malaysian Airlines passenger jet carrying 239 people the day before, investigating suspect passengers who boarded with stolen passports, as relatives begged for news of their loved ones. The United States sent the FBI to investigate after Malaysia Airlines flight MH370 vanished from radar early on March 8 somewhere at sea between Malaysia and Vietnam, but stressed there was no evidence of terrorism yet.    AFP PHOTO / HOANG DINH NAMHOANG DINH NAM/AFP/Getty Images
This picture taken from aboard a flying Soviet-made AN-26 used as a search aircraft by Vietnamese Air Force to look for missing Malaysia Airlines flight MH370, shows a crew member taking part in the search operations over the southern seas off Vietnam on March 9, 2014. Malaysia on March 9 launched a terror probe into the disappearance of a Malaysian Airlines passenger jet carrying 239 people the day before, investigating suspect passengers who boarded with stolen passports, as relatives begged for news of their loved ones. The United States sent the FBI to investigate after Malaysia Airlines flight MH370 vanished from radar early on March 8 somewhere at sea between Malaysia and Vietnam, but stressed there was no evidence of terrorism yet.    AFP PHOTO / HOANG DINH NAMHOANG DINH NAM/AFP/Getty Images

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    Questions swirl after airliner vanishes

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Questions swirl after airliner vanishes

Officials are reviewing new clues in their search for the missing Malaysia Airlines plane. Jim Clancy reports.

Questions swirl after airliner vanishes

Officials are reviewing new clues in their search for the missing Malaysia Airlines plane. Jim Clancy reports.