I've been trying to tell people for a couple of years now that Fusca lives near Pittsburgh, PA, hence the reason he was at the Butler rally.
The photo in the above article was taken at the Jonnet Building in Monroeville, PA, which is just east of Pittsburgh. I found Fusca's address at one time and he lives in a suburb just to the west of Monroeville.
Look at the photos on the left side of the screen in the Google link below. You can compare the photos of the building.
According to this video, he was nowhere near the ridge:
When you say, "Butler police," who are you referring to? The Butler Township police were only there to direct traffic that day. When the shots rang out, a few of those police ran to see if they could be of assistance.
Just to throw this out there:
https://www.redmondfuneralhomeinc.com/obituary/Corey-Comperatore
They mentioned McDonalds in the video. This seems to be the nearest one to the farm show grounds, which is southwest of the McDonalds shown on the map with a red pointer:
The last photo on the left is almost the identical location to where Fusca is standing in the photo from the article.