Lots of JFK-related material will be posted this month in anticipation of the 50th anniversary of his assassination. Here's an old video excerpt from some television program.
I presume the implications in the video have since been debunked by reliable researchers, but I was unable to locate such this morning. I did find this comment in the relevant Wikipedia page:
Questions regarding the forthrightness of the Secret Service increased in the 1990s when the Assassination Records Review Board—which was created when Congress passed the JFK Records Act—requested access to Secret Service records. The Review Board was told by the Secret Service that in January 1995, in violation of the JFK Records Act, the Secret Service destroyed protective survey reports that covered JFK's trips from September 24 through November 8, 1963.Conspiracy theory is often fascinating.