Jim Wagner introduced the term "reality-based" to the martial arts world through Black Belt in 1998. Knowledge Domain is everything you need to know about reality-based personal protection. As one New York instructor put it, "This is the 'missing link' of the martial arts." Concepts include the Jim Wagner Use-of-Force Ladder, the O.O.D.A. process, training-environment control and conflict rehearsal. As a well-known defensive-tactics instructor, Sgt. Jim Wagner draws on more than three decades of experience in martial arts, police, military and special operations. For many years, Jim Wagner wrote Black Belt’s High Risk column. His methods are used by many elite forces, including the Israeli Special Forces, FBI SWAT and Germany's GSG9 unit. Jim Wagner is the creator of two Reality-Based Personal Protection DVD series, a multi-topic DVD series on survival tactics, and the author of two books: Reality-Based Personal Protection and Defensive Tactics for Special Operations, with the third (Protecting Others) in production for 2011 release. He remains in demand around the world, where he preaches the gospel of reality-based fighting, a genre he single-handedly defined.