That makes more sense now. I just watched a documentary on the history channel and there were a few witnesses who said they saw Oswald on the 6th floor but no one saw anyone on the Grassy Knoll with a gun... But the headshot looks like it came from the front and not the back.
Yeah, the headshot does look like it came from the front. No doubt that's how the vast majority of people felt upon first viewing the Zapruder film. However, those familiar with ballistics, or with any real knowledge of physics, knew better. The momentum of a bullet striking the head would not have resulted in the degree of backward movement that we see in the Zapruder film. The momentum of the bullet striking kennedy's head did result in some movement but only a couple of inches. That was a forward movement. John Mytton has a Gif that shows it quite nicely.
A couple of Mythbusters episodes looked into whether a bullet striking a body could violently propel it backwards. They found that they couldn't even do it with a 50 caliber bullet.
James Tague believed that he was hit by either the second or third shot but he wasn't sure of which one.
Mr. TAGUE. I would guess it was either the second or third. I wouldn't say definitely on which one.
It had to have been the third shot. A fragment strike from the second shot is just not plausible at all.
The violent backward movement of Kennedy resulting from the head shot was a neuromuscular reaction.