While everyone is focused on the security guard and the changing timeline, what about the “maintenance man” mentioned in passing that the security guard encountered on the 32nd floor after he got shot? Who is he? For all we know, he was the one that shot Campos from inside the room, shot Paddock to look like a suicide, and then went on the concert shooting spree, before getting out another way that only a “maintenance man” (or someone with unlimited access to all rooms and areas with a “maintenance man” passcard) could. He magically appears on the 32nd Floor and is told to leave by the security guard. With nobody alive in the suite, nothing happens until the police blow the door an hour+ later.
the “maintenance man”
do what? - hmmm...would a maintenance man be a drilling holes kinda guy?