Search for Malaysia Flight 370 Has Cost $44 Million and Rising

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IN FLIGHT - MARCH 29: Wing Commander Rob Shearer looks through binoculars on the flight deck of a Royal New Zealand Air Force P-3K2 Orion aircraft searching for missing Malaysian Airlines flight MH370 on March 29, 2014 over the southern Indian Ocean. Chinese ships trawled a new area in the Indian Ocean for a missing Malaysian passenger jet on Saturday, as the search for Flight MH370 entered its fourth week amid a series of false dawns over sightings of debris. The Malaysian airliner disappeared on March 8 with 239 passengers and crew on board and is suspected to have crashed into the southern Indian Ocean.   (Photo by Jason Reed-Pool/Getty Images)
Photo: Pool/2014 Getty Images

The hunt by 26 nations for the missing jet will likely become "the most expensive search in aviation history," according to a Reuters estimate, with about $44 million used so far and hundreds of millions potentially spent before it's over. "We have at least several days of intense actions ahead of us," said Australia's defense minister on Tuesday. "We're throwing everything at this difficult, complex task."