significantly change the effectiveness of the ukrainian air force relative to russian capabilities. >> the ukrainians are flying a few sortees each day. the weapons that are having the biggest effect in stopping russian forces are the javelin anti-tank missiles, stingers and shoulder fired missiles. there's mobile units that plain contestanted much of ukrainian's airspace which makes flying difficult. the anti-aircraft systems would have to be taken out but ukraine's air force before flying could happen. the weapons are having a greater effect. the u.s. has transferred 17,000 javelin stinger and shoulder fired portable air defense missiles in to the ukraine. the migs would have to bomb the