Malaysian Plane Update

Malaysian Plane Update
(Undated) -- Australian Prime Minister Tony Abbott calls the hunt for the missing plane "the most difficult search ever undertaken." Abbott promised today to do everything humanly possible to find the missing plane. The prime minister is in Australia this week to oversee search and rescue efforts. It's been nearly four weeks since the Boeing 777 vanished from radar after taking off from Kuala Lumpur with 239 people on board.