This second volume on C.O.S. (Close-combat Operational System) will provide you with new self-defense techniques against chokeholds, holds, punches & kicks, knife vs. Knife, gun, rifle, defense with a stick, and more. The concept remains the same: The defense is explosive, strong and straight with simple, easy and realistic techniques. This DVD is reserved for adults and responsible instructors. Instructors: Alain Formaggio and Jean-Michel Lerho.