Searchers for Malaysia Airlines Flight 370 announced Wednesday, the search area has been narrowed dramatically - from about 29,000 square miles to 22,000 square miles.
The search area is now roughly the size of West Virginia.
They've picked up new signals which they believe may have come from the plane's black boxes. Which means investigators could be just days away from finding the missing jet.
Time is running out.
Day 34 of the search, and the batteries in the black boxes are fading more as each day passes.
The Australian ship Ocean Shield, which first picked up two sets of underwater pings on Saturday - reacquired the signals twice on Tuesday.
All four signals were detected within 17 miles of each another.
OutFront: Bob Ballard, the underwater explorer who discovered the wreckage of the Titanic and our own Richard Quest.