Our instructors are experienced law enforcement, military, and security professionals.  We have seen action in the field and on the street.  We possess the strategic knowledge, understanding, and the instructional skills necessary to deliver high value training with real-world application.  



Mark Booher - JD, CPS

Founder | Senior Instructor

Intelligence & Security

Mark is the Founder and Senior Instructor for Barritus. Veteran of the U.S. Army, he spent 5 years working force protection, conducting intelligence and security operations.  Mark has studied both the U.S. and British interrogation and debriefing methods, is a Certified Close Protection Specialist, and trained in the West Bank with members of the IDF on Israeli counter-terrorism and security methods. 

Following his military service, he studied law at the University of Arkansas and spent 6 years as a deputy district attorney.  During that time, he prosecuted numerous cases involving homicide, shootings, assaults, and other crimes of violence.  His experience gives him a unique perspective on the dynamics of violence and how attacks actually occur in urban environments.  Mark founded the Rubicon Training Group in 2013 and in 2017 re-branded the name to Barritus. 

Mark has trained military units at Fort Bragg, personnel from the Department of Justice and hundreds of others from the law enforcement, military, and private sector.  He is also contributor to The Counter Terrorist Magazine.  



Rev. John Slavin


Competitive Shooting
Emergency Trauma

John "the Pistol Packing Preacher,"has been competing and carrying a firearm every day for over 20 years.  John is a veteran of the United States Coast Guard, has worked private security, and most recently, has taken a position as a police chaplain.  He has been pastoring his church for over a decade and spends his free time instructing others in firearm use and competing in IDPA, USPSA, 2-gun, law enforcement, and outlaw gun matches.  His sponsors include CMC Triggers, Integrated Survival Systems, San Tan Tactical, Neomag, Brown Coat Tactical, Notchgear, Froglube and many others.  John holds a PhD in biology and teaches courses in Emergency Trauma care.



Alex Woods


Long-Range Shooting
Special Operations Tactics

Alex is a former special operations soldier and spent five years with the United States Army's 75th Ranger Regiment. Alex is a decorated combat veteran with four tours to Afghanistan and is the graduate of Airborne, Ranger school, sniper, Tiger Swan Rifle and Pistol course, and many other combat schools.