Boxer vs Full Speed Knife Attack - Pressure Testing S.E.R.C Combatives Vranos

Boxer & his Coach test their boxing & grappling skills against simulated knife attacks to test the S.E.R.C. Combatives System. Other Knife Defense Instructors will never do this. Aren't you curious why ? I'll tell you why. They tested it, and it didn't work. If it did work, they would show you the video. It's finally time we challenge the Knife Defense Instructors to show their system under pressure ?