Seeing the oncoming fist after the roll, JJ attempts to stop the oncoming blow by blocking it with his arm. He's still tazed however, causing him to stumble backwards, nearly falling. He barely recovers however, shortening the action he can take now. JJ simply aims his shotgun at Cannon's stomach, so the spread'd still hit him even if he attempted to roll away again. JJ pulled the trigger, and more ashen pellets let fly.