Rosemary Willis
Rosemary Willis (born 1953) was a close witness during the assassination of President Kennedy.
Clearly seen in the Zapruder film at the start of the assassination wearing a white, hooded coat and a red skirt, located to the limousine's left, she runs southwestward and parallel with the limousine while she faces it on her right.
At circa Zapruder film frame 190 (hereafter "Z-190"), she is seen slowing, then she stops running and, simultaneous with her slowing/stopping, she slightly turns her level-facing head to end up looking towards the southwest corner of the Texas School Book Depository (at that instant she was not facing the depository's southeastern-most corner where the Warren Commission's "lone nut" "snipers lair" was).
Immediately after the sitting upright President Kennedy is first hidden by the Stemmons Freeway traffic sign at Z-207 in the Zapruder film, Rosemary suddenly, and very rapidly beginning at Z-214 snaps her head 90 to 100 degrees westward --completely away from the depository-- within only 0.16 second to then face Abraham Zapruder and the grassy knoll by Z-217.
Precisely 0.60 second after starting her extremely quick westward headsnap towards Mr. Zapruder and the grassy knoll, President Kennedy's head then emerges back into the Zapruder film view at Z-225 still sitting upright with his face and arms already displaying a clear reaction to having just been shot.
Importantly, in 1978 Rosemary was interviewed by investigators from the House Select Committee on Assassinations and stated that she heard at least 4 shots during the assassination. She also stated to the HSCA that while she was still facing the grassy knoll picket fence, she was attracted to view the quick movement of a person who quickly dropped down behind a "wall" out of her view. She also stated to the HSCA that her father, assassination close witness Phillip Willis, a U.S. Air Force military veteran, became upset when the Dallas policemen, sheriffs, and detectives --who first quickly ran onto the grassy knoll where Phillip thought the shots came from-- then ran away from the grassy knoll.
Rosemary Willis was never called to testify to the Warren Commission, and refuses to discuss the assassination with researchers.