Since mentioning Tom Alyea here are his own words from Tom Alyea Facts and Photo's from Connie Kritzbergs "Secrets from the Sixth Floor Window pg 39-46.
"I do however know that Officer Mooney was present when the rifle was found because I took film of him at the scene. He is shown talking to another detective, but this was nearly an hour after the sniper's location was found at the window."
"Fritz then walked to the casings, picked them up and held them in his hand over the top of the boxes for me to get a close-up shot of the evidence. I filmed about eight seconds of a close-up shot of the shell casings in Captain Fritz's hand. I stopped filming, and thanked him. I do not recall if he placed them in his pocket or returned them back to the floor, because I was preoccupied with recording other views of the crime scene. I have been asked many times if I thought it was peculiar that the Captain of Homicide picked up evidence with his hands. Actually, that was the first thought that came to me when he did it, but I rationalized that he was the homicide expert and no prints could be taken from spent shell casings. Therefore, any photograph of shell casings taken after this, is staged and not correct. It is highly doubtful that the shell casings that appear in Dallas police photos of the crime scene are the same casings that were found originally."
"Nothing in the way of evidence was found so we retraced our search back down, floor by floor. Shortly after we arrived back on the 6th floor, Deputy Eugene Boone located the assassin's rifle Salmost completely hidden by some overhanging boxes near the stairwell. I filmed it as it was found. In my shot, the figure of Captain Fritz is standing within the enclosure next to the rifle."
It was over an hour before they found the rifle. So for those of you who think Alyea was Johnny on the spot filming he himself said this in regards to the time of finding finding the rifle. While I admit I used the wrong words in saying "recreated" the more accurate way of saying gun and bullets were staged. I was thinking of how the famous photograph of raising the US flag on Iwo Jima was recreated to mark the event for photo and filming. I do acknowledge staging is a better phrase then recreating the scene. For that I apologize.