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(CNN) – Two new pinger signals consistent with the missing plane's black boxes have been picked up by the Australian ship Ocean Shield. This is a major new lead in the search for Malaysia Airlines Flight 370.
The ship is towing a U.S. Navy pinger locator, and is the same ship that picked up two signals Saturday. All four of them are within a 17-mile area.
In about two weeks, the search area has gone from an overall search area the size of Alaska, to one the size of South Carolina.
But search crews say these new signals were weaker than the ones recorded on Saturday, the day the batteries on those data recorders' beacons were supposed to run out. It is now day 34 of the search, and time is clearly not an ally.
CNN's René Marsh has the latest developments.