do you know anything about this assassination at all???
there were (at least) 3 rounds fired
the first round misses (several theories here... from struck a lamp post or tree, to as crazy as you want it to get)
the second round hits JFK in the upper back / neck area when he is behind the sign in the Zapruder film... when he comes back into sight he is grasping for his neck area (where the first round exited)... that is the round that hits Connally in the back then exits goes through his wrist and into his leg
Connally falls back to the drivers side leaning against his wife
Jackie Kennedy leans in to check on JFK
driver of the car is looking back to see wtf is going on as im sure there is some level of commotion in the car at this point
the third round hits JFK in the head
JFK's head explodes
driver snaps back forward leans forward and ducks down
passenger leans forward and ducks down
Connally's wife ducks down with her husband
Jackie freaks out and sees the Secret Service Agent running up to the back of the car
she starts to climb out of the car to the SSA
the SSA climbs up on to the trunk and looks to push her forward and down into the passenger compartment
he covers the back of the car as they drive away
here are some recreations based on the video evidence
http://www.youtube.com/watch?v=dbbIjki-HLo
Beyond Conspiracy - Kennedy assassination‏ - YouTube