CNN CNN Newsroom With Carol Costello January 1, 2015 15:14:00
Investigators mark the debris field so the process of salvaging as much of the plane can begin. stephanie elam, cnn. with me now cnn analyst david gallo, the director of special projects for the woods hole oceanographic institution and cnn aviation analyst less ab bin. i'm glad you're here. right now searchers saw this shadow underneath the water oopsz. that probably means they're not 100% sure they've actually located the plane. so now they're backtracking. what does that mean? >> sonar, it takes skill to interpret sonar images. i was a bit confused they said they saw a shadow. that's not t...