The shooter was the guy standing in front of the car, coming through the windshield at frame 329. Glass spray evident from light. The absence of the front of the car from any pictures a tattletale sign. He rolled into the grass as the car sped up after shooting was over. That was recorded in the Zapruder's film. I can tell you who that is not! It was not Malcom Summers! The gunman is a mystery man who has had his identity hid for 50 years. So is the umbrella man standing "in front" of the sign with the Cuban alongside who was likely responsible for the first shot or played a role in it for distraction!
Glass spray and the absence of Kellerman (ducked below dash at that instant, Connally out of way). Definitely can't be a shot from behind as Kennedy's head moves back a foot and raises his arm in anticipation of what came from the front. Definitely not a 6th floor bolt action rifle coming from above and behind. Look at Zapruder frames, painted in headshot at 313/315 to a continued slumped Kennedy (paint added) who goes back in seat several frames later and raises right arm - a defensive move contrary to a stated shot supposedly coming from behind. An extremely unusual move, must have been a spinal "knee jerk" reaction I guess when head was just struck from behind!
Frames 329 and on critical as Zapruder's camera blurs/shakes - likely reacting to a very visible head shot and loud noise at 329. No reaction of Zapruder's camera at 313, nothing happened at that instant. It shows a 6 foot plume of blood and brain spray! There was a red blur though after frame 329. This begs explanation. 6 foot plume of blood and brain spray, white face for 14 frames, and then a re-appearance of a blurred red blob (real) at frame 330 and on and Mrs. Kennedy's reaction to that. She had no reaction to the 6 foot high plume of blood and brain matter spray as she continues to look at JFK in the neck area and moves her hands. No frontal pictures of limousine to disprove this theory, none taken or maybe all removed/destroyed? Kennedy's brain still missing , car not examined (a few pictures), no Oswald tax return telling you who he was paid by and how he funded his trips to Cuba and Russia. No room for a CT here! It is a matter of national security! You were not supposed to question his framing - a lone gunman! An expert marksman duplicated by no one on a first attempt - the best in the world he was -no denying!