Throughout the world, practitioners of Tenio's DeCuerdas and Diestro DeCuerdas Fighting Systems have excelled in this proven method of combat escrima. Grandmaster Arthur Gonzalez is the head of DeCuerdas Diestro Fighting Systems and Tenio's DeCuerdas. These DeCuerdas Systems are based on the system from the late Grandmaster Gilbert Tenio and are close quarter combat systems which are especially proficient for fighting multiple opponents, close quarter combat and night confrontations. Single and double stick, knife, empty-hands, rope and cane are some but not all of the weapons employed within the system. Real mugging scenarios are employed using empty hands, knife and gun attacks. Gun retention techniques are explored for the military and law enforcement communities, as well as arresting procedures.