CNN CNN Special Report April 16, 2014 03:18:00
It's only there to take sonar pictures. the next step is to send down other submersibles that can do more. gary tuchman got an upclose look at one vehicle that played a key role in finding pieces of space shuttle "challenger." here's what he saw. >> reporter: at first glance it reis semables a spacecraft more than anything else but this is a research sub that has combed the seas doing everything from medical research to ship and aircraft recovery. >> we have an array of light systems on the sub. so you can turn on whichever light you need. >> reporter: jimmy nelson used to spend 170 days a yea...
Source: archive.org