George Matheis retired in 2007 after nearly two decades of civilian and military law enforcement.

He is the founder of Modern Combative Systems LLC. MCS provides training to civilians, military and law enforcement.

During his career George attended in excess of 40 specialized courses in the areas of firearms, defensive tactics, officer survival, crisis negotiations and edged weapons becoming an instructor in several of these areas.

This was in addition of training in several traditional martial art disciplines.

Due to his vast training influences George is known as a trainer who thinks outside the box.

He was responsible for several forward thinking programs within his agency to include force on force training using non law enforcement role players and air soft weapons, the county's first patrol rifle program and his agencies adoption and issue of a tactical folding knife, for which George provided training.

Through experience and research George saw a massive void between what was being taught in the way of open hand combatives, impact weapons , edged weapons and firearms and what he knew to be the realities of interpersonal combat.

With that knowledge he created the Modern Combative Systems which primarily deals with open hand, stick, knives and firearms with seven yards.

In 2007 Modern Combative Systems supplied edged weapons training to the Air Force Special Operation Commands DAGRE (Deployed Aircraft Ground Response Element) at Hurlburt Field FL, home of the Air Commandos.