ok we cannot go live i believe to richard bloom a vehicle and security expert from embry riddle aeronautical university thanks indeed for joining us this hour now it's not the first time a malaysia airlines plane has crashed this year what's their safety record like well i think we have to be careful about of talking about malaysian aviation in general i'll go into catastrophic events in the last year or maybe a statistical anomaly my opinion would be certainly not the best certainly not the worst but it can certainly be modifications in fact i think maybe a little little information allowed to suggest but what's happened in the last few hours a link to what happened months ago would be bhushan in a clean up the sort of. and richard given that the that we know that this this huge military operation taking place and in this region of ukraine forces fighting it's the self-defense forces is it normal for a flight to be actually going over that kind of conflict area does it surprise you to hear about that. well at least from where i am in the united states of america and with the people i speak with the re

on the situation developing situation we're joined by richard security expert from embry riddle aeronautical university thanks again for speaking to us richard tragically it's not the first time a malaysian airlines plane has crashed what is their safety record like. well quite frankly i don't believe there's much of a link between what happened with the malaysian aircraft three seventy and the current the malaysian aircraft seventeen i think the two very different situations in terms of malaysian aviation safety and security not the best not the worst like most countries and i'm most organizations plenty that can be done to modify to upgrade safety and security i think the real issue with what's been happening in the ukraine in russia quite frankly i think this girl you think is fully back in the late one nine hundred eighty s. when the soviet union was disestablished territory it was lost and i think under the current russian administration there's some real opportunities to gain what has been lost i think that's already occurred in georgia in most of the crimea now and in the ukraine i think i think

william walldock is a crash investigator and director of the investigation lab at embry-riddle aeronautical university. he says while it's pointing to a missile strike, investigators still need unaltered physical evidence to find the smoking gun, evidence you can't get from the black boxes. >> you still need the crash site. >> i'm firm believer that you follow the physical evidence. >> reporter: that's exactly what investigators did in 1996 in the case of twa 800 when it was suspected a missile may have brought the plane down, it wasn't until the wreckage was recovered and examined that it was determined there was no such evidence of an attack. walldock says a physical examination is needed on mh 17 wreckage to confirm what many suspect is evidence of a missile strike in these photos. >> ever seen a stop sign that somebody fired a shotgun at? that's what you see. you see the large number of penetration holes that are going from the outside in. >> would it be possible to cover up that kind of evidence? >> hard, but if you've got enough effort and manpower -- >> and enough time. >> and enough time. >> r