Fiction. The Zapruder film ends with a look behind the picket fence, and there was nothing there. And, Zapruder was in the army. You meant to tell me that Zapruder would not recognize shots being fired from rifles, 15 feet away, and he was on a concrete wing where the rifles would have been at the same level as his feet. He could and did look right down behind the picket fence. As it shows in the film there was nothing there.
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