Dennis has over 27 years of law enforcement experience. He has been a lead firearms and tactics instructor for the Schaumburg Illinois Police Department for over 20 years and has provided instruction to various local, state, and federal law enforcement organizations. He is a certified rangemaster, and holds instructor certifications in master firearms, rapid deployment, patrol rifle, less lethal, patrol procedures, ballistic shield, transitional pistol, range maintenance and operation, along with certifications as an armorer.
He holds degrees in criminal justice and is an active member of professional organizations to include the International Association of Law Enforcement Firearms Instructors (IALEFI), International Law Enforcement Educators and Trainers Association (ILEETA), National Information Officers Association, National Tactical Officers Association (NTOA), American Woman’s Self Defense Association, Illinois Tactical Officers Association and a life member/endowment member of the National Rifle Association (NRA). Dennis is also a competitive shooter with the United States Practical Shooters Association (USPSA).