CNN Piers Morgan Live March 26, 2014 04:17:00
Undertaking. so, we want to show you this, starting off with the hide row foam. tell us what this does here. >> this is a hide row phone. a simple fied underwater micro phone. were going to dip it over the side and listen for that pinger locator. >> and how wide, how far can it he hear? >> five miles. >> so, this is whats looking for the ping. if it went away, or they found a general search area, they would move to sonar. >> right. and this is sonar. this is going to emit sound. its going to ref...
Source: archive.org