Let's talk more about the downing of that jetliner over Ukraine's CBS news' aviation consultant mark Rosen terrorists with us on the WB and -- -- He's a former chair of the National Transportation Safety Board. Ms. Rosenberg thanks for joining us this morning. Delighted to -- -- today. Tell us what's happening now in Ukraine that I've heard reports that the intelligence agencies know it was a missile that shot this thing down. So what sort of investigation is their left then to do. Well it's got to be collaborated it is got to be -- understood what kind of explosive but took this aircraft down. Whether it was say Bob whether it was a mess hall of whether it was an accident even though all the circumstances are still pointing. The fact that this was a surface to air missile without. Independent globally respected in investigative teams coming there to work together. The piece this together to understand what happened -- they all remain questions were ever. Mark who is going to take control of this investigation. That's a good question technically according to the -- protocols and that's the international civil aviation organization to specialized agency the United Nations. They develop these protocols through something in there in their treaty called pinnacle thirteen. Tell you the process is that tells Indian authorities to tell you what's necessary to do -- -- -- international. Accident investigation for mediation. So in this case it will appear that the ukrainians will be that technical lead however we -- out to them inviting. And the international community. People like the NTSB from the United States it's people like the FAA ideals from Britain because that was Rolls Royce engines. Of people like that Dutch safety board because they had significant number of passengers on board. And -- the immolation and of course because it was there airplane -- a very large independent. Globally respected group of professional investigators. To do the actual technical work. So that in fact what ever the results are will be credible will be transparent. And will be believed. What -- the NTSB like to be involved. Absolutely they want to be involved. The real problem here is the that nature -- aware there -- working we're talking about a contested war zone here we're talking about people. Firing at each other Indian lands in fact we can get some kind of a cease fire but guarantees from. All sides that the safety. And welfare of the investigators will. Will be make sure. I certainly when I was ENTSB would have never made a decision to send a team like that it. Now you said this morning words like globally respected. I know the last time we talked about Malaysian transportation officials you had the very least some doubts about their competency. Is that in anyway a factor here are we worried that this could become the mass that we saw when their other flight disappeared. Yes I think ukrainians will be wide enough at least I hope they are to recognize that with out that type of support. Need that type of support which is globally respected and has the technical competence to do that market. They will never be able to prove what they believe. Is the fact here that aid rebel missile that shot that aircraft down. That is why it is so critical to bringing in the the independent. Transparent. Investigative bodies that are capable of doing it technical work and also capable of having a believable result. Got to bring big -- that did to this point though mark why it was a passenger jets allowed to -- in this area as you just pointed out that active war zone should that not -- been closed airspace. Certainly that's going to be something brought up by the investigative teams like now we do know that the FAA for example. I'd put out they had no come back in April. Indicating that this was a hostile area and commercial aircraft should not beat out flying in those around. I can't know which also has the responsibility for coordinating and rooting could have done the same thing but didn't. There is a kind of a nuance here there was a recognition that flying low over that area would be prohibited. But that the altitude that in fact. And making seventy was flying. There is the belief that that was supposed to be okay obviously that was wrong and I very conservative thought would have said let's just stay away from all this area. In that regard then do you see a longer term change in procedure. Longer flights more fuel higher cost. That's what could have happened with this particular flight and it's like considered taking that type of rooting. But that's the price you pay for a safety and security and it's the Cape May actually price when in fact you see what the results were here. And we are almost out of time mark tell us exactly what's going on on the ground and out to the degree there is an investigation. Describe it. Well what I'm afraid -- is that this is perhaps -- certain type of an accident scene. We have got compromise we have got contamination. It's little by -- hackers hazard areas so anybody walking in there. Without the appropriate equipment and that -- could end up well with terrible terrible diseases. All right very good mark thanks for your insight this morning good stuff. Mark Rosen current CBS news' aviation since his safety consultant and the former chair of the National Transportation Safety Board.