David Diller has served over 19 years with the Illinois State Police and has spent 25 years in law enforcement and weapons training.
His many certifications include the following:

- NRA Certified Law Enforcement Firearms Instructor for Handgun & Shotgun, I.S.R.A. Range, Bonfield, Il, May 2013
- NRA Certified Law Enforcement Firearms Instructor – Tactical Shooting & Patrol Rifle
- Instructor Development Course, 40-hour, National Rifle Association of America, Las Vegas Metro PD, Las Vegas, NV, October 2011 & November 2005
- NRA Certified Rifle Instructor, Basic Rifle Shooting Course, NRA/ISRA, Bonfield, IL May 2005
- Illinois State Police Patrol Rifle Instructor Course, 32-hour, ISP Academy, July 2004
- IDOC Chemical Munitions Instructor; Illinois State Police Range Officer Instructor School, 36-hour, ISP Academy, June 2004
- Armalite AR-15 Armorer’s School
- Glock Armorer’s School
- Remington Armorer’s School
- Sig Sauer Pistol Armorer’s School
- S&W MP Armorer’s School
- Illinois State Police Level I Instructor Development School, 32-hour, ISP Academy
- Control and Arrest Tactics Instructor Certification Course, 72-hour, ISP Academy
- Critical Incident Response at Schools Instructor, MTU 8, Feb. 2007;










Massad Ayoob has been handgun editor of GUNS magazine and law enforcement editor of AMERICAN HANDGUNNER since the 1970s, and has published thousands of articles in gun magazines, martial arts publications, and law enforcement journals. He is the author of more than a dozen books on firearms, self-defense, and related topics, including In the Gravest Extreme, widely considered to be the authoritative text on the topic of the use of lethal force.
This is an intense, four-day, 40-hour immersion course in the “rules of engagement” for armed law- abiding private citizens. The course emphasizes legal issues, tactical issues, and aftermath management. Topics will include interacting with suspects, witnesses, responding police officers, threat recognition and mind-set, and the management of the social and psychological aftermath of having to use lethal force in defense of self or others. Also covered is preparing beforehand for legal repercussions and minimizing your exposure to them. Situations in the home, at the place of business, or “on the street” will all be covered. Range work will include instruction in the use of the defensive handgun under extreme stress. Drawing from concealment, two-handed stances, shooting from cover, one-handed stances with either hand, speed reloading, and more are taught with an overall emphasis on fast, accurate shot placement. The course will culminate with a written examination covering the classroom topics and a police-style handgun qualification course. This course is a blending of MAG 20 / Classroom and MAG 20 / Live Fire but is taught over 4 – 5 days. Be prepared to shoot on the first day.
David Kenik is the owner of Armed Response, author of the book, Armed Response, and co-author of the Armed Response Video Training Series.
Bob Houzenga
Andy Kemp brings 40+ years of shooting experience with him. He has been a staff firearms instructor for Massad Ayoob since the mid-90s and was also a staff instructor for John Farnam’s Defense Training International, giving him the rare honor of having instructor credentials with two of the Big Four schools. In addition to firearms training, Andy is instructor-certified in Weapon Retention & Disarming and Kubotan/Persuader. Knife/Counter-Knife training and unarmed self-defense tactics supplement Andy’s regular firearms training, adding a more universal dimension to his instructing style. Over the years Andy has trained and taught with many of the most prestigious and nationally renowned firearms instructors including Massad Ayoob, Chuck Taylor, Bank Miller, the Chapman Academy, John Farnam, Joe Truncale, and Jim Cirillo. This diversity allows Andy to provide students with the full spectrum of techniques and philosophies. Andy was also co-creator/instructor for LFI-Advanced Handgun Skills, a high-intensity handgun skill development course added to the Lethal Force Institute curriculum and which now carries the MTG banner.