I believe Twin Peaks released surveillance video as well that shows at least three bikers holding hand guns, most scattering for cover and one engaged in firing his weapon.
Hard to find a link to that video though so it may not have been released to the public.
If this is true ... what was the biker shooting at and what was the reason that he had pulled his weapon? Was he shooting at other bikers offensively? ... or was it in self-defense from cops who were shooting at and killing he and his friends. If I was packing that day ... and I do a lot as I am a CCW ... I would probably have drawn my weapon too.