The Hickey did it theory was conjured up and developed by Howard Donahue, and publicized by Bonar Menninger in Mortal Error.
Within Mortal Error they acknowledged Hickey could not have shot JFK while sitting down, as the road was on a slope and the bullet would have to have passed through the Queen Mary's windshield.
So they proposed Hickey tried to stand up on the back seat, and slipped. They even presented a schematic drawing showing Hickey's position at the time he slipped, and how this would allow the bullet to get over the Queen Mary's windshield.
A few years back I super-imposed their drawing onto the head-shot frame from the Bronson film.
(If you put your curser on the image, you can use your arrows to scroll to the right and see the overlay of Hickey in the car.)
As you can see, Hickey was not standing at the time of the head-shot, and there was no way for him to fire a bullet over the windshield.
Nope. The slope of the road had nothing to do with it. A level road would not have made any difference.
Nope. The bullet didnt have to clear the windshield by 6", a 1/4"was enuff.
Nope. Hickey didnt have to stand up much, he was sitting up on cases (AR15 ammo & stuff), ie half standing.
Nope. Hickey didnt have to hold the AR15 under his armpit.
Nope. Hickey didnt have to slip. A jerk of the Queen Mary was enough (braking probably).
Also a braking jerk would raise the back of the QM, whilst dropping the front, helping the needed vertical angle.
Nope. It wouldnt take long for Hickey to rise & jerk & then fall back (a small fraction of a second would do the trick).
And Bronson's fps is much slower than Zapruder's.
Nope. Tonnes of evidence confirms that Hickey killed JFK (Xrays)(smell of cordite)(visual witnesses)(hearing witnesses)(other)(more other)(& then some more).
Bronson's footage smells fishy. The other day i did some quick measurements & i notice that his footage suggests that the QM moved 6" then 6" then 6" in the first three frames that looked at, & then 18" in the next frame. I will have to go back & have a closer look.
Arnold's footage has never been seen. Oliver's footage has never been seen. But they allowed Bronson's footage to see the light of day, because (in addition to being very blurry)(with up to 10 standing adults eclipsing the QM or Hickey during the critical time)(u cant even see the QM properly to check position or speed)(standing adults block the front the back & in between) luckily for the feds the footage stepped over the landmine, or perhaps the feds got rid of one or two frames first.