east mowline, illinois. as luck would have it, detective jim weekley is on his way to meet his wife for lunch when he sees the incident unfold. >> i'm slowing up making sure nothing is going wrong, and that's when i see the glistening of the taser wires. and that's when i slam on my brakes. >> detective weekley races around the front of the cruiser and is shocked by what he sees. >> get the [ muted ] off of him! the first thing i see is every officer's worst nightmare. i see the officer on his back. i see the suspect punching him very fast and violently to the face. >> without hesitation, he joins in the melee. >> my job at that point was to get the suspect to start fighting me, to get him off the officer. >> meanwhile, officer anderson is fighting for his life. >> i was basically only able to see shadows. i decided i was going to have to shoot him before i went unconscious, and that's when i shot mr. mallory. >> i didn't so much hear the first felt shot, i felt it.