If I recall my NATO Int Officer course stuff correctly, the US may already have that Buk's radar signature on the record somewhere. Of course, if the Rooskies have any brains, they will have (if they did) given the rebels a 'clean' one. It may also be possible to eliminate all the Ukranian ones, but I doubt that Putin will officially believe that.....
Keep it up A Van !...jokes on Friday are traditional on Pprune...in fact they have their own thread in Jet Blast!