>> there is no doubt in my mind, russian special operations forces who have been on the ground advising these guys first the past year trained these guys. >> as proof emerges that russian supplied missiles brought down mh17 over eastern ukraine the question remains did russian soldiers pull the trigger? >> you is to get a hold of the people who manned that battery and get them into a place where they can be interrogated at great lengths. >> marine pilot and crash investigator justin green, now an aviation attorney says at the very least russia trained the trigger men. >> if you found a system on the street this is not something you can get in and use. it requires special and specific training and the only place you find people who are able to train, operators are the military. now the russian military is probably the chief target to look for the trainers.