value. >> that's correct. so without any witnesses, somebody from a ship, even miles away, or from a land base or any other aircraft in the area, that may have picked up an emergency signal, the transponder has an emergency signal. it's known internationally. all you have to do is tune in that frequency on the transponder -- >> would any of this be -- you have the satellite stuff, various radar stations-one working against the other. could they collate anything from those technical pieces that would reconstruct what happened here? 're are you saying without the plane, forget it. >> without the physical evidence, they can only probably give you areas to search in. if the airplane broke up in the air. we have radar in this country, here, that once the airplane breaks up, different pieces of