The Zapruder film makes the distances look a lot longer than they actually are. It is really not that far when you stand there and look at it.
My adult son and I, staring out the window next to Oswald's alleged vantage point, disagree as to how "makeable" the shots were.
He thinks it would've been easy for an average marksman; I agree on the first shot, not so sure on the other two.
I was only 11 when the assassination occurred, and have had a lifelong fascination with the conspiracy theories.
While I don't buy into many of them, the TV series "The Men Who Killed Kennedy" does present some troubling possibilities.