What does the X-Ray show? I'd have to say that it shows air, likely resulting from the tracheotomy.
Air, sure. It was noted that JFK sustained damage to his T1 vertebrae. But let's give you the benefit of the doubt and say that CE-399 entered at JFK's back and exited his throat at C7.
You aren't taking into consideration the 17 degree downward angle of the bullet's trajectory. You must place the back wound at the very top of C7 so the throat wound can exit at the bottom of C7.
Do you actually think the back wound was that high? Don't forget that our POV is horizontal (0 deg) not along the trajectory (-17 deg).
You LNers have got it set up so that the back wound is higher than the throat wound to accommodate a shot from the 6th floor of the TSBD. How is that working out for you? Your only hope is the 2 laser challenge and a re-enactment to demonstrate that the MB was even possible let alone feasible. Then you can take your results and shove it down my festering gob and I will STFU! Isn't that your ultimate goal here?
And when you are finished with that, try moving the trajectory down to T1 and see where the neck wound comes out. CE-399 is a riddle wrapped in a mystery inside an enigma it's...