Satellite Process News Today

>> like a drone, or towed along on a sled. we call that a towed array. and we havent gone to that phase yet, because we havent had that initial starting point. >> what happens when the batteries for those flight data recorders, the cockpit voice recorder, are dead, and the pingers -- the pinging is no longer going? where do the investigators, the search operation go from there? >> well, you see each day that the search area is shifting around. and thats because data thats being gathered from the...