Was the Followup Car Blocking a Shot at Z313?

[Bob Prudhomme]

Something else to think about. The shooter may be looking through his scope at the limo and follow up car at a 15-18° angle but, Elm St. is not on flat and level ground. It slopes down to the Triple Underpass at 3.13° or, as we say, a 5.46% grade. For every 18.3 feet forward, Elm St., at this point, will drop one foot.

If the shooter is trying to see over one of the standing SS agents' heads to line a shot up on JFK, and he and JFK are 18.3 feet apart, drop JFK down another foot from where the shooter would see him if Elm St. was level. Drop JFK down 2 feet if there is 36.6 feet between them.

It has been estimated that, with JFK sitting upright in the back of the limo, the top of his head would have been just over 4 feet above the pavement. However, by the time of the head shot, JFK is no longer upright and, in fact, is slumped to the left. The top of his head may only be 3 feet above the pavement at this point.