I have seen no reports to that effect.
Gateway Pundit at https://www.thegatewaypundit.com/2024/07/trumps-would-be-assassin-spotted-roof-officer-half/ quotes a report by a local news station, saying Crooks was seen on the roof 30 minutes before shots were fired. But when you look at that station’s linked report now it says that he was observed scoping out the roof and it wasn’t sure if he had a rifle.
I don’t know why there is that discrepancy. The news station’s page doesn’t say that the page has been updated.
Sometimes I think changing stories are the way to keep us chasing squirrels.
What we do know is that the best assassin spot there was unguarded and at least 2 counter-sniper teams had their sights on the shooter almost a minute before he shot at Trump but didn’t take him out. And even though there was a live shooter event in process the agents with Trump did NOT hide and protect him.