Yeah... Greer's rubbernecking head turn... He looks toward the president - probably while he is braking the Limo - until the fatal shot... This is some of the best evidence for me that something nefarious, and something much larger than one lone nut was going on that day....
You're rather dimwitted aren't you.
Yeah, you'd be just the dummy to drive the car, knowing it would be fired upon by numerous shooters