I have two friends who are Secret Service and both think the PA attempt on Trump was staged. Their reasons:
1. The rooftop the shot was fired from "should" have had some member of law enforcement on it. They are both willing to admit that this could have just been a colossal fuck up and the guy got lucky that no one was on it and at a minumim that the access to the roof as not secured. The rooftop was ~800 feet from the stage. That is well within the danger zone for snipers when POTUS/Candidate is speaking at a venue like this. It's not like this was a downtown area with 1000s of windows to cover. This was a vantage point with a fantastic sightline to the stage. So, either either a complete fuckup or allowed to happen.
2. The fact that Trump stood up with the arm in the air gesture. Both they both think this is an absolute tell. The agents would have smothered him and dragged him out of there with total cover. POTUS/Candidate would not be able to stand up and shake his fist. Both said that every agent involved in that would have been demoted or outright fired for not getting POTUS out of there.
3. Both have also said that they would haven taken a bullet for him. Not because they respect him, far from it. No agent wants to live the rest of their life knowing they failed to protect their assignment.
At the time, I was very sure it was staged. I still think that.