CNN CNN Newsroom April 13, 2014 20:33:00
Saturday for that two-hour period. that says we are in the right area. >> david, what kind of further research can be done on those last pinger locations if they're within a 17-mile radius? what can researchers do and searchers do with that last bit of information to try to pinpoint a pinger or a black box, whatever originated that sound? >> well, there's a couple of things. we talked about triangulation before and when you have one point, you have a straight line to work with, so if you put circles around that, put that two-mile stretch within the three-mile dome or so, two and a half-mile do...