let's look at the logistic and technology with mike lyons, a retired army major, and chri christopher harmera u.s. analyst from the institute of the study of war. thank you both for being with us. the missile that we are talking about, it's a rooushan made system. a lot of people use it. doesn't mean russia fired it. putin denied responsibility. the state department accused the country of arming those rebels in that part of ukraine. who has access to these missiles. >> the rebels would have access to the rebel system. they may have stolen one from the government a couple of weeks ago. there's russian fingerprints all over this. it's something the government would want to get to. it would give the rebels confidence. >> what clues does the alt tube and the missile give us to narrow down the responsibility of who is responsibility. you can see at this altitude there's no way it was a shoulder fired air missile, the best tops at 18,000 feet. 30,000 feet, we are talking about a medium range medium altitude, and this mice ill fits into that category. >> keep the shot up. i'll ask the director to l