CNN CNN Newsroom April 19, 2014 21:44:00
>> and retract. >> reporter: a second manipulator can be equipped with tools for cutting through metal such as on the fuselage of a plane. >> it will be ideal if there's a black box, not a problem at all for an rov to pick it up and put it in a basket and recover it back to the vessel. >> reporter: experts say top priority for investigators is to retrieve both the flight data recorder and the cockpit voice recorder. this rov called the trident xls can go to depths of around 10,000 feet but the rov that's brought to the wreckage of flight 370 could have to withstand the pressure of around 15,00...