As we continue to develop the S4 Defensive Edge Style of Self Defense, Chemical Weapons play an increasingly important role, as a 1st phase response to an aggressive act, followed by implementation of the blade. This makes a great deal of sense in both the combat effectiveness of the blade, and the use of force escalation from non-lethal, to less lethal. 

S4 has a long history of working with Chemical Weapons, and is now in the process of developing the ultimate delivery system complimenting S4 Defensive Edge.