Let's consider what Dan Rather said on November 25, 1963 after viewing the original Zapruder film.
So now, the question is: if he was stuck shallowly in the back, at a harmless spot in his back, which did no significant physical damage, and no mental damage whatsoever, why didn't he respond? Why didn't he take action; evasive, defensive action? Why didn't he get down and get Jackie to get down? Why didn't he tell the driver to floor it? Why is it that he just sat there and did absolutely nothing?