there's no film of Oswald pulling the trigger.
If such a photo existed.... It would have to have been taken at a location somewhere other than the sixth floor window.....Lee told the interrogators that he was on the first floor at the time the President's motorcade passed by the TSBD.....
If Oswald was the assassin, wouldn't he claim he was somewhere else anyway?
And Lee DESCRIBED the passing by of the Domino room by two of his fellow employees ( Jarman & Norman) at 12:25 ....Which attests to the fact that he was on the first floor at the time Jarman and Norman passed through the first floor shipping area.
Actually Oswald said he had lunch with the two, meaning he saw them together at some point on the first floor (not necessarily 12:25), or he merely based it on the routine the two had for having lunch. Even if Oswald stayed on the sixth floor after noon, he would have known Jarman and Norman had stayed together because the two arrived underneath the SN window before the assassination.
What are the odds, that a suspect desperate for an alibi, describes having lunch with the only two co-workers he thought might have been together since noon? Even the most guilty will grasp at any alibi, however weak.
If they're headed for the back stairs, how could Oswald have seen them passing through the first floor area? If Oswald saw them walking by along the outside of the building, wouldn't he have given that detail, rather than claim he was having lunch with them?