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....
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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