CNN Erin Burnett OutFront April 9, 2014 23:17:00
Out to about 40 days. but again, you got to be right on the top of the unit to hear it at 40 days. >> and we're at 34 right now, richard. so we're getting there. are we going to get enough to triangulate the exact distance? i think we have made the point to people that yes, you may be hearing something, but that doesn't mean you can dive down and look around and it's there. >> angus houston said last night, the man in charge of the search operation, houston said there is no second chance, meaning he's got to keep the search, the mowing of the sea, as tom foreman was showing, he has to keep tha...