Over at LowTechCombat, a review and interview about the ISR Matrix.

ISR Matrix is a self defence system which teaches a linear response that aims to overcome an attack in a progressive manner. The defenders response can be scaled depending on the nature of the attack. In particular, the response is scaled according to the legal use of force continuum. For a more aggressive attack, more force can be used where necessary. Where little real threat is present, control is used to neutralize the attack.

You can read more on ISR Matrix’s website.

That sounds interesting. I wonder how it compares to Tony Blauer’s S.P.E.A.R. System.