David Kahn has formally trained all five branches of the U.S. military, the Royal Marines, the Italian Marines, as well as federal, state, and local law enforcement agencies in many central training schoolhouses. These schoolhouses include the Marine Corps Martial Arts School of Excellence (MACE), Naval Special Warfare Advanced Training Command (Coronado), and Army School of Combatives (Ft. Benning). David has also trained the Academy instructors of the FBI, DEA, New Jersey State Police, Pennsylvania State Police, Philadelphia Police, NYNJ Port Authority, and a host of other agencies. He is a certified instructor by the State of New Jersey Police Training Commission and MPOETC approved. David has also trained NFL players in DK Krav Maga Football Combatives including several perennial pro bowlers.

Woven within the fabric of Instructor Kahn's pedigree, he also holds an edict of a fifth-degree black belt in Combat Jiu-Jitsu from the United States Judo Association. Further separating his professional training from that of 'demonstration practitioner', Mr. Kahn develops his real-world programming from an ongoing relationship with current Military and Law Enforcement specialists.

Within his appointment as Director of the Israeli Combative Tactics Association (ICTA) "It's not enough to create a plan of attack from something you see online or hear about in the third person. We test, study, debug, and actively seek to complicate every situation, knowing that nothing can be depended upon happening when you're called on to protect your life or those of your loved ones. This is true martial innovation for all people at all levels."

Mainstream media regularly feature David including New York Times, Men’s Fitness, GQ, Esquire, USA Today, Los Angeles Times, Washington Post, New Yorker, Penthouse, Fitness, Marine Corps News, Armed Forces Network, Special Operations Report, and Military.com. He has also appeared on mainstream news networks including CBS, ABC, Fox, WPN 11, and the Discovery Channel.

David has authored seven Krav Maga books with two of his books have won national book awards. The books in order of publication are Krav Maga: An Essential Guide to the Renowned Method -- for Self Defense and Fitness | Advanced Krav Maga -- The Next Level of Fitness and Self-Defense | Krav Maga Weapon Defenses | Krav Maga Professional Tactics | Krav Maga Defense -- How to Defend Yourself Against the 12 Most Common Unarmed Street Attacks along with two forthcoming publications, Krav Maga Combatives: Maximum Effect (YMAA 2019) and Krav Maga Situational Defenses (YMAA 2020).

David has also produced four accompanying award-winning DVD sets including Mastering Krav Maga Volume | Mastering Krav Maga Volume II | Mastering Krav Maga Volume III and Mastering Krav Maga Volume IV along with creating the 42-hour Mastering Krav Maga Online program.

David and his partners operate several Israeli Krav Maga training centers of excellence.

David has also produced four accompanying award winning DVD sets including Mastering Krav Maga Volume | Mastering Krav Maga Volume II | Mastering Krav Maga Volume III and Mastering Krav Maga Volume IV along with creating the 42 hour Mastering Krav Maga Online program.

David and his partners operate several Israeli Krav Maga training centers of excellence.