As seen in the extant Zapruder film, the first
shot was fired at Z145-155.
The first
hit was fired at Z186-190.
Regarding the first shot evident in the Zapruder film:
• There is a noticeable blur episode at around Z158.
• Connally starts to turn his head rapidly to the right at Z162.
• Several witnesses said the first shot was fired during the limo's turn onto Elm Street or just after it completed the turn.
• A 10-year-old girl named Rosemary Willis, running along the grass to the left of the limousine, begins to noticeably slow down between Z162 and Z174, and she is standing still by no later than Z187. When she was an adult, Ms. Willis explained that she stopped running because she heard a loud noise behind her.
Reactions to Six Shots in the Zapruder Film
https://drive.google.com/file/d/1nnp3Vch_KMOB_qufAhlQOCLTTS9jqNV0/viewThose who are chained down by the lone-gunman theory can only offer lame, vacuous explanations for the obvious shot reactions that refute their three-shots-only scenario.