In this video  sensei Vince Morris - an acknowledged master of teaching effective defensive techniques to Law Enforcement and Special Forces Groups as well as Martial Artists all over the world - Called by a USA White House security advisor: "The master who teaches the Professionals" changes his usual format - analyzing the techniques (Bunkai) of a specific Kata - and gives a glimpse into exactly what is required to make everyone's personal defensive tactics much more dynamic, fast and effective! 
With graphic examples from the real world, sensei Vince provides detailed information on exactly how to deal with the most dangerous of attacks, including those with weapons!  (Formerly double DVD, now 1 USB)