Hee hee. From my experience one in three people get it. Had everybody test and in each batch of three only two go in. As for realism. I will take range, cover, and if they are flanked/supressed. *Full cover takes 20% from hit. Flanked adds 10% half cover takes 10% range can go from taking 20% to being right up on then and getting some kind of 100% point blank.* Then like roll a D100 with an app of some sorts. Also, are we all colonels?