Just read the SS director DEI hires interview and it massive bullshit! She said they knew about him, that he was there with a backpack on, didn't put anyone on the roof because it was sloped and they didn't want anyone to fall ang that they secured the building from inside. Yet didn't delay Trumps speech and put him on stage.
That roof has a very mild pitch. Strange the sniper that shot the bad guy was on a pitched roof. This was indeed a setup. This was intentional. This was a plan.