i think, you know, we all love to speculate and we like to speculate responsibly and i just think the kind of information that is out there makes it enormously difficult to say anything for certain. >> but wouldn't those communication systems go down at the same time if the plane, let's say, exploded? >> well, it depends on what communication systems you're talking about, too. if these are the systems that are reporting the engine parameters and functioning, that's one thing. if it's, if it's what the plane puts out ordinarily, other than that, you're talking about a different place. >> so, tom, i want to talk a little bit more about the reuters report. if the reuters' reporting is right and these communication systems were shut off deliberately, someone, obviously, didn't want the plane to communicate to the outside world. the question is why and who.