Hickey was sitting in the (L) Back Seat of the Queen Mary. (Behind the Driver). JFK was sitting in the (R) Back Seat of the JFK Limo. (Behind Kellerman/Shotgun). Tague was positioned to the front (L) of JFK. With the Queen Mary positioned behind the JFK Limo, how does a Hickey fired shot traveling to the (R), Strike JFK and then zig-zag back to the (L) striking the tarmac?
If u place the AR15 just left of the centerline of Queen Mary, & if u place JFK's head just right of the centerline of the jfklimo, then, in a plan-view, a line from the AR15 to JFK's head when extended goes to near where Tague is standing. And all of Hickey's shots were on about that line, but each shot having a different elevation if observed in a side-view.
But the exact direction of that line depends on the exact location of Queen Mary relative to the jfklimo, ie was Queen Mary directly behind, or, slightly to one side --- &, was Queen Mary parallel to the jfklimo or on a bit of an angle.
The shot that hit JFK did not hit the tarmac. The shot that hit the tarmac was the first & or second & or third.
But anyhow that stuff is in an old thread of mine, so if we want to look into it in more detail we should go to that thread.
https://www.jfkassassinationforum.com/index.php/topic,2833.72.html