He was so worried about going to jail, I think his desperation allowed him to go along with any plan set before him. The fact that he used the firefighter's empty uniform as a prop at the GOP convention says everything about how much he cared that someone died because of this stunt
Yeah, the moment he was safe, he didn't give a second thought to the guy who died. I don't think someone dying was his issue. The problem would have been the kid could miss and hit him. That would have been his problem. So they probably told him it was blanks or something to get him to go along.
Safe from a "faux" bullet. He's a narcissist, no care for anyone.