In his interview with Doug Horne, photo analyst Dino Brugioni (see "The Zapruder Film Mystery" on YouTube) states that the 8 mm. Z film was brought to him in the NPIC lab on the evening of SaPersonay, Nov. 23, 1963, by two Secret Service agents, who had just come from the airport. The agents wanted Brugioni to make copies of particular frames of the Z film that would then be used to make briefing boards for the CIA. After finding an 8 mm. projector, Brugioni and the agents watched the Z film. It was the first time any of them had seen it, and all were shocked by the sight of the head shot causing a piece of JFK's skull to fly "three or four feet" into the air. They watched the film several times. Brugioni says it was the last time he saw the film looking the way it did on that SaPersonay night. Horne comments that if any aspect of the film has been altered (such as the missing frames of JFK's skull piece flying into the air) then the entire film is suspect. Among the suspects is the Secret Service. While JFK was still in Parkland, a Secret Service agent was photographed removing blood spatter from the presidential limo with a bucket and sponge. Law enforcement agencies never -- never -- remove evidence from a crime scene. Later that evening in Washington, two Secret Service agents asked the autopsy surgeon to give them JFK's brain, which he was carrying in a metal container. He gave it to them because the agents said Bobby Kennedy had asked for it. Did the Secret Service remove evidence because they already knew what had happened? Was the Secret Service trying to remove evidence that could have shown that a Secret Service agent standing on the rear seat of the backup car was thrown off balance and accidentally fired his AR-15 and hit JFK's head when the motorcade changed speeds? Did the Secret Service try to protect their reputations by covering up a tragic accident, thereby causing untold agony to Americans who suspect that we're not being told the truth? In other words, did they protect themselves at the expense of the nation they swore to defend?