It was the cops. Dirty cops paid off by glow niggers purposely didn't do their job to let the sniper on the roof.
https://nitter.poast.org/MJTruthUltra/status/1813372230610325777?t=VJa1R7gie8SOrXd7QG0tUA&s=19
The FBI also painted the ladder yellow like how they do in video games nowadays. Gotta make sure the shooter knows how to play the game.