Did they or did they alert the sniper that a shooter was about to pop his head up over that ridge and to star scanning for it?

That roof should have been secured. There is no good explanation for it being neglected. We really don't have a testimony from the SS or police or their radio recordings to confirm that they did nothing or ignored those trying to warn of this. I watched the Brinkles/BBC interview like everyoneelse. Those guys yelling about the shooter just may have saved countless lives because they did alert the security.