UNTHINKABLE: Concepts and Techniques for the Gravest Extreme! | MDTS
Modern Defensive Training Systems

MDTS Training

MDTS is a New York based firearms training and personal protection consulting company. We specialize in pistol, concealed carry, shotgun, carbine, defensive knife, less lethal, physical defense and threat awareness training courses. Mobile training courses are available in N.Y. and abroad. Contact us to host a training course at your range or location. Click logo below to see schedule of classes near you.

UNTHINKABLE: Concepts and Techniques for Gravest Extreme

UNTHINKABLE: Concepts and Techniques for the Gravest Extreme!

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Date(s) - 10/18/2015
8:30am - 5:30pm

Crossfit Mohawk Valley

Category(ies) No Categories

“Nothing must be beyond our consideration; we must see the world as it is, not as we

are.” – William Aprill, Aprill Risk Consulting


This course has a critical over-arching goal: to introduce participants to some of the unaddressed realities of violent criminal aggression and effective defensive responses. The utility of this increased awareness is two-fold:


—it provides stress inoculation, so that the moment of an actual life-threatening scenario will not be the first time participants will have considered the demands of the circumstance or employed defensive skills under pressure.

—it drives future practice toward more robust and adaptive defensive skills.


Whatever the circumstances, we have come to understand ourselves to be vulnerable to threats against life and health. This paradigm shift has inspired us to inquire into defensive arts and sciences, unlike those who actively reject reality.

All too often, though, the rush to acquire tools and techniques begins before a grounded understanding of the mindset and decision-making of the violent criminal offender, the risk profiles we face by virtue of our lifestyle choices and behavior, our own performance capacities and, perhaps most importantly, our choice of role in the world.

Without a sound conceptual foundation as a basis to proceed, we come to misperceive the world and make choices that become increasingly detached from reality and impermeable to data, leaving us in greater danger without the ability to perceive it.

Errors and omissions in these fundamental decisions are magnified when expressed in:
Defensive tool choices
Gear choices
Practice regimen
Preferred tactics, techniques, and procedures


This course will provide participants with the opportunity to increase their understanding of the world as it is and their role within it  while exposing them to novel stressors and situations so that working paradigms of the defensive encounter can adapt. Emphasis will be explicitly placed on safely-induced stress inoculation, demonstration and establishment of skills under pressure, and identification of necessary skills involved in defending one’s life with the pistol. As described by a past participant: “without this course I would never have known to think about real threats, or even what they actually are.”


Course components include:

Intensive, interactive lecture on
The 5 W’s of Risk: Constructing an Effective Pre-Need Defense Paradigm
Fatal Choices: Understanding Target and Victim Selection
Hands-on instruction in
Defensive Pistol: Open-Source Disarming and Retention

Course schedule is as follows below:
8:30-9:00 Introductions and housekeeping
9:00-10:50 Presentation: The 5 W’s of Risk
11:00-1:00 Open-Source Disarming and Retention, Part 1
1:00-2:00 Lunch Break
2:00-3:50 Open-Source Disarming and Retention, Part 2
4:00-5:50 Presentation: Fatal Choices
5:50-6:00 Debrief and Certificates


Ballistic Radio Interview with William Aprill – 2/16/14 

Ballistic Radio Interview with William Aprill – 7/14/13


William Aprill is a licensed mental health professional with over 15 years experience across the continuum of care. He presently maintains a private practice and consultancy specializing in post-traumatic interventions and other disciplines. William is a former deputy sheriff (Orleans Parish, LA, Criminal Sheriff’s Office) and Special Deputy US Marshal (Eastern District of Louisiana). He is a decorated competitive shooter and has taught civilian, law enforcement, and military personnel in various fighting skills since 1990. He maintains an active schedule both as student and teacher, having been instructor-rated by several top-tier trainers and studying under many of the most influential members of the combative arts community. Through his company Aprill Risk Consulting, William has presented his material on violent criminals and their decision-making, defensive incident aftermath, mindset development and defensive preparedness nationally, including at the Annual Conference of the International Association of Law Enforcement Firearms Instructors (IALEFI), Rangemaster Tactical Conference, Tactical Response Alumni Weekend, and at Paul-E-Palooza, the memorial conference and fundraiser for the family of the late Paul Gomez.

William has been a popular guest on the firearms/training industry broadcast Ballistic Radio, and in 2014 Personal Defense Network and has released 2 DVDs of his training blocks on defensive decision-making and mindset development.


Bookings are closed for this event.