Reply #1: Secret Service Agent Henry J. Rybka registered dismay when ordered off the bumper.

[Octafish]

The image above is a frame from a video shot minutes before President Kennedy's assassination. The video shows Secret Service Agent Henry J. Rybka expresses shock -- three times -- as recorded on the video, when he is odered off the riding stations, located on the limousine's rear bumper.



The order to leave the back of President Kennedy's limousine unattended was, evidently, issued by Secret Service Agent Emory Roberts at Love Field.

More detail: AGENTS GO ON RECORD.

Get more background on Secret Service Agent Emory Roberts, who ordered Secret Service Agent Henry J. Rybka off the bumper of JFK's limousine at Love Field:

THE STRANGE ACTIONS (AND INACTION) OF AGENT EMORY ROBERTS

Bet you this is the kind of thing that gets left out of Tom Hanks' movie, deconstruct911. It's evidence for involvement by members of the U.S. government in the assassination of President Kennedy.