Well that aerial view of the event location that we have all been seeing since Sat. is easily available.
Google earth satellite, address= 615 Whitestown Road Butler, Pennsylvania 16001 USA.
So the punk could see the lay of the land
without leaving his filthy bedroom. It is pretty obvious those Glass Research buildings would be probably his only opportunity. He wouldn’t know the layout of the Grandstands / Podium, maybe blind luck on getting a clear shot or something much more sinister.
The logs for who searched the aerial data on that venue BEFORE the event should be analyzed. Could be interesting.