Despite this video, I think there was a second shooter on the grassy knoll. I think the "gun" above is a glare off of the passenger's gray hair. Watch his head as it goes back and to the left. This is the direct direction it would go if it were struck from a bullet fired from the grassy knoll. LHO hit the man in front of JFK, and the guy on the knoll picked off JFK. IMO.