4x confirmed that the advance security plan specifically called for local law enforcement to be posted on the roof of building Crooks accessed. No blame placed, but SS ultimately responsible for security plan being executed. By local law enforcement it could be Butler PD, sheriff, state police etc.
The delay in sniper engaging the shooter was due to sniper team confusion because the security plan had law enforcement on the damn roof.
The sniper team in the video that's everywhere is NOT the team that took out Crooks. It was the other team approximately 400 yards away from Crooks.
One of the shots that ruptured the hydraulic line on the tractor behind the bleachers caused a small explosion that caused confusion about possible additional gunfire.