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(CNN) – The Australians have called Malaysia Airlines Flight 370 the most difficult search in human history.
Soon, a ship with advanced U.S. technology will arrive to help searchers try to locate the flight data and cockpit voice recorder from the plane, which disappeared 28 days ago. But by the time it arrives, the batteries in the recorder's pingers will be nearly out of power, if they are still working at all.
"This is the technological equivalent of a Hail Mary pass," said CNN aviation analyst and pilot Miles O'Brien.
Given the weather conditions, and the vast search area, O'Brien says the search team may get lucky.
"I think you'd probably have a better shot at winning Powerball, but it's worth trying," said O'Brien.
"Having not found anything on the surface, it sounds like they are going to go out and have a go, because time is running out. And if they don't use these assets now, there is not going to be any point," says CNN aviation analyst Jeff Wise, author of "Extreme Fear."
For more analysis, check out the video above.