https://www.youtube.com/watch?v=CcWK8PPh-74 , https://www.youtube.com/@LawAndCrime/videos
The President's Assassin: Cover-Up of Thomas Crooks https://www.youtube.com/watch?v=CZrrWbcOXZQ
"6:11 p.m. Gunfire erupts Trump was eight minutes into his speech when the shooting began, according to officials." https://abcnews.go.com/US/timeline-trump-assassination-attempt-unfolded-rally-pennsylvania/story?id=111933309
In both of these cases, both areas didn't seem to be as secure as they should have been. Both men should have been enclosed within a bullet proof glass box.
Unfortunately, back in 1963 even if the top had been inplace, it wasn't of a bulletproof standard.
https://www.thehenryford.org/collections-and-research/digital-resources/popular-topics/kennedy-limo
https://www.thecollector.com/what-happened-to-the-limo-after-kennedy-assassination
https://thedigitallabyrinth.blogspot.com/search?q=Charlie+Kirk