Personal Defense Industries LLC

Kore Self-Defense is the Personal Defense Industries’ physical training center located in Loudoun County, Virginia providing self-defense training built from a Krav Maga Curriculum originally developed by Eyal Yanilov. Building from this foundation, our curriculum is fueled by continuous research in the evolution of conflict and violence in the post-modern world. Unlike other Krav Maga based programs, our goals are not based on a systemic martial arts paradigm. We focus instead on what is relevant to our students now – today.

Krav Maga & Chiron Training

Krav Maga is our “hardware” and reality based self-defense is our “software”. Our Program Developer & Owner works collaboratively with Chiron Training & the International Violence Dynamics Team to keep our principle based self-defense training program relevant, effective, and current. Once certified, our instructors are required to continue their training; keeping their physical and instructional skills current. Like Karate, Brazilian Jiu Jitsu, and other martial arts, students can train and test for ranks designated by patches as a nod to our military history.

Before you step on the mat,
we encourage you to meet our team.


Andrea Boyer
Andrea BoyerDirector, General Operations & Senior Instructor, Adult Program
Andrea (Andi) Boyer earned her first instructor certification through Krav Maga Global. She is certified through Kore Self-Defense’s instructor college, is a health coach and a pilates instructor with over 15 years experience. As Kore’s Operations Director, she assists in research/development for the training center, manages daily operations alongside the owner, and as a senior instructor teaches both fitness and self-defense classes in our adult program.

Andi’s Krav Maga training resume includes time with Eyal Yanilov, Ilya Dunsky, Jan Tavini and Alan Predolin. She has also clocked multiple hours training with Rory Miller, Terry Trahan, Randy King, & Kasey Keckeisen – all members of the Violence Dynamics cadre.

Andi is the primary instructor in Kore’s unique, principle-based onboarding course [required for all prospective members] contributing to it’s evolution with her depth of knowledge in biomechanics. She participated in Kore’s first instructor college becoming certified as a Krav Maga Global instructor inside of 18 months.

Outside the Gym:

Andi is a hardcore music lover and a staunch supporter of all things Canadian (hint, that’s where she’s from). She spends as much time outdoors as she can hiking her way around Northern Virginia. Andi spends some of her free time researching and reading about self-defense and is a fan of the New England Patriots, hockey and UFC. She and her husband Jesse, have lived in the DMV area for several years.

Brian Mason
Brian MasonDirector, Kore Warriors (kids) Program & Senior Instructor, Adult Program
Brian is an inaugural member of Kore Self-Defense, joining the training program in the first few weeks of our existence. He has been instrumental in the development of both our adult and youth training programs, spearheading our unique youth self-defense program.

Brian’s first certification as an instructor was with Krav Maga Global. During his tenure with KMG he also earned specialization certifications in the following:
Kids Instructor Training
Women’s Instructor Training
Combat Mindset
Law Enforcement Instructor Training

He has a unique understanding of what it takes to work from ground zero to become a high performing practitioner. He shares with students how training in Krav Maga has improved his physical health, but also how it has improved his capacity for managing stress and comfort level in difficult situations in all areas of life.

As director of our youth program Krav Maga & Self-Defense program, Brian overseas a team of volunteer coaches developing their skills as both practitioners and coaches from the ground floor. His guidance and leadership has created a program recognized throughout the county. He also teaches multiple youth classes each week and is one of two senior instructors in the adult program.

Outside The Gym:

Brian is an IT Specialist. He and his wife are members of the community surrounding Kore Krav Maga’s reach. In addition to Krav Maga, Brian enjoys paintball and is a beta tester for one of the paintball industry’s leading manufacturers. He is comfortable on the firearms range with a breadth of knowledge in this arena of personal protection, has a lifelong practice in magic/illusion and dabbles in Fencing.


Dan McCracken
Dan McCrackenCertified Instructor
Dan earned a Krav Maga instructor certification originally with Krav Maga Global, Eyal Yanilov & Emmanuel Ayache. He lends his support to the development team as an acting law enforcement consultant & regular instructor. He is currently certified through Kore’s Instructor College program and carries extensive certifications as an instructor in a vast arena of personal security related skill sets. He brings over 23 years in law enforcement at the local and federal levels to our team.

Amy Maxwell
Amy MaxwellCertified Instructor
Amy Maxwell’s original certification as a Krav Maga instructor was granted by Krav Maga Global. She has continued her education as an instructor with extensive training in other fighting systems and is currently certified by Kore Self-Defense’s Instructor College.

Amy began training at Kore Krav Maga in our first 6 months of operation and has been an integral element in our efforts to increase the number of female instructors here in the area & in the U.S. She utilizes her understanding of goal development and what it takes to accomplish difficult tasks in her work with students on the mat.

Jesse Boyer
Jesse BoyerCertified Instructor
Jesse Boyer’s original instructor certification was granted by Krav Maga Global. He is a valuable member of our instructor cadre and is currently certified through the Kore Instructor College. He has continued his training with industry experts Rory Miller, Alan Predolin, Terry Trahan and Randy King.

He is a powerful example of someone who understands good tactical thinking never relies on sheer power & size. From a career perspective, Jesse has worked in the financial industry, including a stint at the world bank. What this means on the mat? He possesses a depth in understanding human behavior when confronting something with multi-layered levels of importance and personal meaning. If you are training in self-defense, this knowledge is a valuable element.

Rory Miller
Rory MillerConsigliere
As Consigliere, Rory supports the training programs as Subject Matter Expert in Violence Dynamics and advisor to curriculum development/programming in the self-defense program. Kore’s foundations of self-defense course, The Kore Training Course, is a product of the Rory’s collaboration with our Chief Instructor, Tammy McCracken. For more information on Rory Miller, his training series and published works we encourage you to visit his website: Chiron Training.

Personal Defense Industries Instructor College


Our Instructor College is open to qualified, enrolled Kore Self-Defense Students. Becoming a certified instructor requires commitment, technical proficiency in the physical skills, and academic competency in self-defense instruction. Instructor certification is an apprentice/internship process with periodic assessment toward final credentialing.



Achieve Your Goals

Flexible membership packages to suit all levels of training to help achieve your self defense goals