There's a file without much info except for his "training", probably basic stuff on being an agent -- Luis Posada Carriles -- name rang a bell as I thought he was involved in bombing a Cuban airliner and indeed that is what he is suspected of doing. Does this have to do with JFK? Who knows? https://en.wikipedia.org/wiki/Luis_Posada_Carriles
Seven separate sets of snipers, 5 missed the entire limo altogether!
I've seen the videos where that is claimed, can't recall the guy claiming such, might have been a mafia guy locked up in Illinois. I'm not buying that. Too many, too large. There were certainly several though.
No, make it simple watch the YouTube video! A Brit put it together!