You miss the point. The claim of a possible missed shot is not rare.
Dear Comrade Storing,
A missing-everything, steeply-downward-angled shot at a rapidly moving target is easy to understand; a missing-everything horizontal shot by a professional sniper and his spotter is hard to understand.
Why did the evil, evil CIA or the evil, evil [fill in the blank] send such a crummy sniper and spotter to shoot at JFK "from the bushes"?
And after missing miserably with their one-and-only shot, why did they try to join the motorcade in their "getaway car" instead of just leaving their rifle in it and mingling innocent-like "to see what the heck's going on, and maybe even to help catch the bad guy!!!"?
-- Tom