CNN CNN Special Report April 7, 2014 05:12:00
Pinger locator goes down and sweeps that area first. the towed pinger locator can go down as far as 20,000 feet below the surface of the sea. it can detect the pinger from up to two miles away, even if it is fading. these developments overnight and mid day in the region are very encouraging. of course, we know it does not necessarily mean that they have found the black box, but it is encouraging. the next step now that they have gotten the signals is to send the bluefin 21 down to that area where the signals were picked up. the bluefin 21 looks like a torpedo. it goes down to significant depth...