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Mark Colangelo has 33 years teaching and martial arts experience, He is the President & Director of Operation for Law Enforcement & Military Survival Tactics, LLC., and the creator of the 6 volume series "Close Quarter Combat Survival Tactics - Incapacitate or Eliminate". He is a certified Police Tactics Instructor, a certified Defensive Tactics Instructor and a certified Advanced Executive Protectionthe field of professional bodyguarding. Agent. He is also an internationally recognized 9th degree Grandmaster (Founder of Go Jiu Bujitsu); and he holds multiple significant degree ranks in karate, judo and jujitsu.