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Malaysia's Department of Civil Aviation's Director General Azharuddin Abdul Rahman briefs reporters on search and recovery efforts within existing and new areas for missing Malaysia Airlines plane during a press conference, Monday, March 10, 2014 in Sepang, Malaysia. The search operation for the missing Malaysia Airlines MH370 which has involved 34 aircraft and 40 ships from several countries covering a 50-nautical mile radius from the point the plane vanished from radar screens between Malaysia and Vietnam continues after its disappearance since Saturday. Experts say possible causes of the apparent crash include an explosion, catastrophic engine failure, terrorist attack, extreme turbulence, or pilot error or even suicide. (AP Photo/Daniel Chan)