Because he was told so.
Yeah, otherwise, why go there. You wouldn’t go there and mill around the crowd with your rife, checking out to see what rooftops were not secured. You might accidentally get arrested. But let’s say you did do that, for some unaccountable reason, where would you get a ladder? Would it just be your lucky day that you found an unsecure rooftop and a ladder to climb up there? There must have been planning involved, and that usually requires another person(s).
Well it sure wasn’t plain dumb luck that the shooter found the only unguarded rooftop. The SS is just too pathetic with their finger pointing.
When their charge gets fired upon from 150 yards away, the SS are fully to blame. They are in charge & should be assigning any supplemental LE to exact positions with detailed instructions down to knowing who is going to be where at what time. If the counter sniper team(s) truly had eyes on the shooter for 3 minutes waiting for permission to shoot, the person that made those rules of engagement should be brought up on charges. Last night I was of the opinion it was just a major f up by SS, but today I’m not so sure. There are too many coincidences that just don’t add up.