Quite interesting, but still some questions:
1) The interview with Mr. Holland took place at least 2 years after the Kennedy Assassination, as evidenced by the 1966 Ford they walk by behind the picket fence. ( New cars usually came out in the fall of the year before the actual model year. ) Why so long for the interview ???
2) The " Puffs of Smoke" are assumed to be from a 2nd rifle, but almost all ammunition available by that time was smokeless. Perhaps a really dirty rifle ??? Or Foreign ammo ???
I have NEVER believed that Oswald acted alone. As Scotty says; " You cannot change the Laws of Physics !!! " Shooting at a person in a convertible that is moving away from the Shooter, at a considerable distance, and managing a Head Shot, PLUS the " Magic Bullet " that managed to hit President Kennedy, then turn around and hit Governor Connelly too ??? Really ?!?
It's a shame, though probably a necessary shame, that The Warren Commission reached their conclusions so quickly and with finality.