Remington Fireball with a frangible round from the grassy knoll, wearing a coat that kind of looked like a police uniform.
It's an interesting interview and he even wrote a book.
However, my first wife (b: 12-19-1962 - d: 07-28-1992) , had a romantic theory that was cool, even if probably not true.
Marilyn Monroe and JFK had an affair. The morning of the day she was going to have a press conference and spill at least two cans of beans, she is found dead of an accidental overdose.
Well, she was previously married to Joe DiMaggio. He was connected, shall we say. Even though divorced, she was to be protected, off limits. You don't harm the wife or ex-wife of a made man. It is the last thing you do. So, RFK and JFK were revenge for the death of MM.
Like I said, not true. But certainly romantic and reads like a decent screenplay idea.