CNN Early Start With John Berman and Christine Romans April 16, 2014 09:37:00
Some questions surrounding whether or not the bluefin-21 is up to the task. this is a monumental task for an under water submersible given the depth and pressure it's facing 2.8 miles below the surface. it exerts pressure equivalent to two family cars. also consider the terrain. they don't know exactly what kind of terrain is down there. they think it's largely flat and largely rolling, but they are not certain. the bluefin-21 having to navigate what is down there. you have the silt. they are not entirely sure how deep the silt goes but could affect the sonar imaging effort. a lot of factors t...