Jackie snaps her head to the right after z-190.
There is no "snap" after Z190; just a continuation of the head turn begun in the early Z170s.
This supports Willis' claim the first shot was fired just before 202.
This doesn't work with what Phil Willis said:
"Mrs. Kennedy was likewise smiling and facing more to my
side of the street. When the first shot was fired, her head
seemed to just snap in that direction"
"she was looking more to the left, which would be my
side of the street. Then when the first shot was fired,
she turned to the right toward him"
Jackie turned from "facing more to my side of the street ... to the right toward him".
Jackie begins to turn her head from Willis's side of the street in the early-170s, within the same second that the Connallys made rightward head-turns in the Z160s. By Z180, Jackie is not even close to looking at Willis's side of the street.
The point is, neither Betzner, nor Willis heard any loud noise like a rifle shot, before Betzners 186 photo.
Mr. WILLIS. No, sir; I took that picture just seconds before the first shot was fired, to get back close up. Then I started down the street, and the regular weekly edition of Life magazine came out and shows me in about three different pictures going down the street. Then my next shot was taken at the very--in fact, the shot caused me to squeeze the camera shutter, and I got a picture of the President as he was hit with the first shot. So instantaneous, in fact, that the crowd hadn't had time to react.
Willis thought his slide corresponded with Z226, a frame printed in the Life Memorial Edition that he refers to in his testimony. So he's under the impression that his Z202 slide shows Z226 from the rear, and that Kennedy is reacting to being struck by raising his hands up towards his throat.
Kennedy's right hand waving in Z202 wasn't visible to Willis when he took his slide. So Willis could assume that Kennedy's arms in his slide were the same as they were in Z226.
With that in mind, Willis could claim his No. 5 slide showed "Assassin's 1st Bullet Strikes The President". And maybe he was hearing reverberations from the first shot as he snapped his No. 5 slide.
^Willis is refering to his photo at Z205 approx. So if there had been a shot prior, then neither he,nor Betzner heard it.
Betzner thinks he heard more than two shots, but could only recall two shots because they related to things he was doing (winding his camera) or witnessing (the head shot). Some "Bunched" shot advocates claim Betzner missed hearing a shot that occurred between his "winding the camera" shot and the head shot. The "early miss" advocates claim the first shot was more likely to be overlooked or not as distinctively recalled as most thought the first shot was anything but a shot ("firecracker" or "backfire") and were concentrating on seeing the motorcade.
You can try claim that there is some noise 160 or 170 which is causing the Willis girl to slow down running, but the fact is, its actual about Z190 approx when she ABRUPTLY stops
I allow a second or so for the Willis girl, who is running full-on in the Z160s, to process the noise, decide to stop and physically bring her body to a stop.
Those SS agents in the follow car, they dont seem to be responding at all to a loud shot from behind even up until the Z207 frame. Only that SS agent Hickey, moves a little.
One can't take witness statements as absolutely literal, but if Agent John Ready (left inset, above) was reasonably accurate, he makes a rightward head-turn during the Z160s, about when the Governor and Mrs. Kennedy made theirs.
"I immediately turned to my right rear trying to locate the
source but was not able to determine the exact location."
-- John Ready
One can't say exactly why people are turning their heads rightward in the Z160s-170s or why Rosemary Willis was motivated to slow down and stop. I'm offering the thought that there might have been a shot fired then. Anything within reason is worth consideration. Things like Greer shooting Kennedy or Day constructing the paper bag probably are not worth consideration.