CNN New Day April 18, 2014 10:59:00
They're exploring the possibility of deploying more underwater autonomous vehicles to help with this search. meanwhile, overnight, the bluefin-21 exploring new depths. it traveled some 4.7 kilometers underneath the ocean's surface. previously thought it could only travel 4.5. now, it's very important that it's able to go into deeper t waters. you may remember it had cut its first mission short. this is really critical area. it's the area they believe that most likely find the black box based on that very detailed acoustic analysis of pings. so it's a good sign it was able to go deeper into the...
Source: archive.org