Clint Hill was just on the local DFW channel 11 news describing how Jackie was on the back of the car retrieving “parts” that were blown off of the presidents head that were on the trunk. She was retrieving parts when he jumped on the BACK of the car to offer cover or help. If he had been shot from the back with the head shot, brains and blood would have been al over the driver and the hood of the car. Instead, they were on the rear back deck.
JFK was wearing a back brace because of his weak back from previous injuries. When the first or second bullet went through his neck (back to front) and exited under his larynx, he could not fall over as the brace held him upright.
Watch the zapruder film, slow motion and you can see that he was shot through the head from front to back.
Oh, yes! Definitely.
Forward motion of the car would cause airflow to move from front to back and capture expended matter with it.