Do you think that just because you don't see it in the Z-film it couldn't possibly have happened?
I'd forgotten about the "Weidmann Invisible Blowout" theory.
Just for the record - there is no way a massive blowout at the back of the skull would not appear on the Z-film.
The Z-film clearly shows "jets" of material being blown upwards from the top of JFK's head.
And let's have a closer look at the people you keep wheeling out who saw this blowout at the back of the head:
Jenkins - describes a massive flap on the side of the head that opened up to reveal a massive injury to the top of the head.
Custer - describes a wound he can get both hands into
Reibe - Q: Did you see any other—in addition to that injury that you just described, did you see any other injuries to the head?
A: Yes, there was a flap of bone over on the side above the temporal area.
O' Connor - Regarding the wound in the head, O'Connor said there was 'I..no use me opening the skull because there were no brains."
O‘Connor described the defect as being in the region from the "...Occiptal around the temporal and parietal regions." He
said there was a "...massive hole, no little hole." O'Connor believes the bullet came in from the front right and
blew out
the top. Each man describes a massive injury, not just to the back of the head, but one consistent with what we see in the Z-film and autopsy pics.
You have nothing, zero, that demonstrates the injury to JFK's head was a blowout at the back of the head. It was a massive injury that removed most of the bone from the top right side of the skull.