STEP BY STEP

-Shots from the grassy knoll meant that two gunmen must have fired at the president within a split-second. Lee Harvey Oswald, accused of firing three shots at Kennedy from a point at the Texas School Book Depository, could not have been in two places at once.

-In the immediate aftermath of the assassination, many witnesses and policemen found themselves in the parking lot on top of the Grassy Knoll.

-The "rush" to the knoll actually occurred over a minute after the shots.

-The Grassy Knoll has since been a favorite of researchers, who've found"assassins" and "puffs of smoke" from numerous photographs that captured the area. In 1967 came the sensational announcement that a "classic gunman" shape was scene on a film.