Hi Allan,
....
"Some suggested car momentarily halted, would make sense using an automatic pistol and having the SS jump off the back car and catch the front! At 10 mph constant speed or car speeding up from that - impossible even if it was a big boat!"
What are you saying here?
Two shots in quick succession is not something expected from a bolt action carcano rifle firing at a moving object. Two shots spaced half a second a part would be what I would consider quick succession. This is attainable by using an automatic weapon where bullets come out without having to re-aim after using one hand to eject a round.
Considering Jack Trojan Post #12:
Could the shot coming directly from the front and passing through the windshield have come from "pseudo Malcom Summers" placing the shot drawn as Jack has shown but a few frames later? At the very least, this man was a key witness. Maybe the shot from the overpass came whizzing past his head? If he didn't do it, he obviously saw or heard something to make him run back or back off and do a somersault. Altgens unfazed at the same time was not scared and unreactive - a bullet flying past him evoked no response. Remember, we have
no other footage showing "Malcom Summers" position prior to his grass roll. What was his position prior to pictures taken of him in other films? Consider also that there is a possible reason for sunlight aberration across SS agent with head down in front seat which could be glass shards reflected in light. (I am referring to Z322 and Z330). One thing is sure, the car was whisked away without local examination and the windshield was admittedly changed. Jacqueline has a small reaction action at Z325 when her gaze moved from chest to his neck and an even greater one at Z334 when there would have been a great noise from Z330! Again my speculation on watching Jacqueline.
Having the SS agent run up and right beside motorcycles was a great distraction at the scene. I am sure the motorcycle escorts were observing this closely to make sure they wouldn't run over him. At Z339, you can see motorcycle slow down and watch the SS agent jump on the back. These folks weren't watching the surrounding area for a shooter, everyone was focused on him ju,ping on and Jacqueline trying to leave the car.
Consider, umbrella man and "Cuban" frantically waving hands in the air seconds before when first shot came in. "Hey look over here everybody! Pay attention to us. Watch the birdy!" Meanwhile something else takes place and distraction rules the day. Who else was hidden behind the sign that we don't see on that first shot? To me, if there was a coordinated effort, the very first shot comes from the other side of road - only Zapruder film shows those unknown characters in perfect position with perfect distraction!