More than one gunman

Dealey Plaza in 2003.

The wooden fence on the grassy knoll.

The Warren Commission findings and the single bullet theory are implausible according to some researchers. Oswald's rifle, through testing by the FBI, could only be fired three times within five to eight seconds of the assassination. The Warren Commission, through eyewitnesses, determined that only three bullets were fired as well: one of the three bullets missed the vehicle entirely; one hit Kennedy and passed through Governor John Connally, and the third bullet was fatal to the President. The weight of the bullet fragments taken from Connally and those remaining in his body supposedly totaled more than could have been missing from the bullet found on Connally's stretcher, known as the "pristine bullet". However, witness testimony seems to indicate that only tiny fragments, of less total mass than was missing from the bullet, were left in Connally.In addition, the trajectory of the bullet, which hit Kennedy above the right shoulder blade and passed through his neck (according to the autopsy), supposedly would have had to change course to pass through Connally's rib cage and wrist.