plane went missing and earlier we spoke to our contributor former marine pilot retired colonel stephen ganyardve radar better than it, the positioning transmitted from the aircraft so even though it was lost well out to sea there will be good data on the altitude, air spree and what the aircraft was doing in its final moments so i think we'll have a pretty good idea whether it did just disappear which may suggest a bomb or did it go into some sort of steep descent? we obviously don't have any radar transmission, so lots of questions at this point but i think we have data that will allow us to find the wreckage. in past the sharm el sheikh airplane that went down, when an airplane just disappears at altitude, at cruise altitude it's very unusual and usually something that is catastropc that will bring it down. perhaps a bomb or a hijacking or somebody takes control of the airplane but an airplane, an airliner at cruise altitude is a very safe place to be and no reason in the world that an other than something nefarious or catastrophic happening. egypt, tense domestic situation, it's just going

. >> let's dig in more with stephen ganyard and our consultant brad garrett former fbi special agent. steve, let me begin with you. asbr could be an act of terror right now but let's go back to the plane and the possibility of a mechanical failure. it was a clear day. can you rule that out? >> yeah, you can never rule it out, george, until we're able to do the whole investigation but in this case we have very good data coming from the airplane that was being updated at one-second intervals at 37,000 feet and it disappeared. airplanes, airliners do not disappear and looking at the idea that something catastrophic occurred like a bomb. >> when you think of 37,000 feet over the water, not over land, is that too high for a surface-to-air missile or shoulder-fired missile? >> it is. remember, you and i have talked about when the shoulder-fired missiles have a limited altitude so we're concerned that terrorists have these kinds of surface-to-air missiles but only go up to about 20,000 feet. this would require something like a radar guided very sophisticated radar guided missile up to 37,000

. >> let's get more from our aviation expert stephen ganyard. >> this is key.s will help narrow down the search area. they'll be listening for the metallic pinger powered by the battery. we have 30 days to find the >> let's run through the theories. u.s. officials say that they didn't -- our satellites have not picked up any heat signature of a possible explosion. >> it's a little bit strange that they didn't. on the other hand, if you think of the metrojet. the russian aircraft brought down was brought down by a coke can size of explosive. it doesn't mean there would be a giant bomb. it could be done with little explosives. >> i know you have been skeptical of the whole report that the plane swerved and circled around before it went down. you're skeptical. if it were true, would that possibly indicate a struggle in the cockpit? >> highly unlikely. i think we're looking at an airplane that came apart at altitude. perhaps the radar was seeing the pieces of the jet before it hit the water. >> thank you, steve ganyard. >>> the charles de gaulle par t airport a maj