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Miles an hour. the own tire airplane pulverized and it hit into a snow field. it's the energy behind the impact. so as this aircraft struck the mountain side it started to break up and fragment into small pieces because of the high energy and everything in the aircraft as well as the aircraft structure then comes and starts to fragment and it typically spreads in what we call a fan-shaped pattern, where the point of impact or the origin of impact all the wreckage then is thrown out into a debris field. if this case it was up the side of that mountain in a fan shape pattern. that's why we have ...

Descent to the water. it would be impossible to do a successful ditching in some tomorrow conditions at night over rough seas. so it is as i say, so many different scenarios that might have happened. but clearly the aircraft has in some way ruptured to allow passengers to separate from the aircraft itself. >> now comes the hard part of trying to find those black boxes which are actually orange or red, we call them kolcolloquially black boxes. we'll be able to hear what they were saying we'll also be able to see what was happening on these instruments. that is the next really important clue isn...

Pieces that were different than aircraft structure, they've already been removed. it's taken too much time, too many people have gone through there. i think the whole scene is compromised. >> yeah. the probe indicates that this missile was launched from an area in eastern ukraine controlled by the separatist rebels. how precise can the investigators get if all they're left with is trying to figure out if trajectory based on videos they have, et cetera? >> well, you can do some work in that area, but it is compromised now. >> so the u.s. and the f.b.i. are being sent over. the national transpor...

Degree temperatures die of hypothermia and exposure, it's a physiological miracle he was able to survive at those temperatures without oxygen for that long. >> and the statistics show that there have been 105 stowaways worldwide from 1947 to 2014, including this incident. 80 of those people died. that's a survival rate of 76.2%. one thing i don't understand is the structure of the wheel well. can you get from the wheel well into the baggage compartment? >> that's a sealed area and part of the aircraft structure itself. when that gear comes up, there is a structure that surrounds the landing ge...

Alex, but they're not talking butt that right now. they seem to be, you know, very conservative for once, instead of not making announce pt ments based on no or limit data. they seem to be very tight-lipped about it. >> this australian military official says they've spotted four six and a half-foot-long orange colored objects today. what comes to mind for you? do you think it's part of possible of the flight? >> no, there's nothing on the aircraft itself that would make you think that that's part of the aircraft structure. if it were part of the cargo that it was carrying, that would be my onl...