I dont know how many shooters there were, two certainly(the driver) and the shot which he took in the adam's apple from the front(another shooter independant of the driver) So at least two, perhaps more.My opinion is 3 or more.
So, it is of your opinion that:
1. A mystery gunman shot from somewhere in front of the limo, through the windshield, and into Kennedy's adam's apple, deftly avoiding the rearview mirror, the driver, the other secret service agent, the governor, and the governor's seat, in broad daylight, while somehow avoiding detection from anyone on the scene.
2. Oswald shot from the 6th floor of the TSBD. Since the governor and Kennedy both reacted at the same time to their respective wounds, Oswald and the front shooter somehow timed their shots with absolute perfect precision.
3. A few seconds later, the driver deliberately stopped the limo, turned around, and fired the shot which exploded the front of Kennedy's head, also miraculously escaping detection.
Does this pretty well sum up your theory of what happened in Dealy Plaza that day? Any other shooters we need to examine? The grassy knoll shooter, perhaps? Maybe the umbrella man?