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At GDSO, our mission is to empower individuals and organizations with the knowledge, skills, and mindset necessary to excel in high-pressure situations. Through comprehensive and immersive training programs, we strive to equip our clients with the expertise to effectively assess, plan, and execute tactical operations with precision, confidence, and utmost professionalism. We are committed to fostering a culture of continuous learning, adaptability, and teamwork, ensuring that our clients are prepared to overcome any challenge they may face in the field. With a focus on safety, ethics, and cutting-edge techniques, we aim to elevate the standards of tactical training, enabling our clients to fulfill their missions successfully and safeguard the lives of those they serve. Together, we forge the path towards excellence in tactical proficiency, ensuring that our clients are always mission-ready.


Training has a positive impact on the community by enhancing public safety, preventing crime, enabling rapid emergency response, fostering community engagement, and supporting professional development. It equips law enforcement, security personnel, civilians and first responders with the skills and knowledge needed to effectively handle critical situations, ultimately creating a safer and more resilient community.


We understand the duties and sacrifices made by first responders around the world. All currently active first responders will receive a 10% discount on all of our courses. Thank you for keeping our communities safe.




Former United States Marine and recently served in the Middle East as a DoD Contractor. Actively maintains a high level of proficiency in Combat Tactics and Techniques, Foreign Internal Defense, Radio Network Design, Development, and Sustainment, COMINT: Signals Intelligence, Imagery Intelligence, Geospatial Intelligence, Human Intelligence, and Counterintelligence. Professional affiliations include working by, with and/or through:

Department of Defense (DoD)
Department of State (DoS)
Other Government Agencies (OGA)



Former United States Marine Corps Sniper, with deployments to both Iraq and Afghanistan as a Scout Sniper. He is determined to educate civilians, law enforcement and fellow service-members in the field of Marksmanship, Survival and First Aid. Jon attended the following schools:

Scout Sniper School
Urban Sniper School
Combat Lifesaver School
SERE (Survival, Evasion, Resistance, Escape) School Cold Weather Mountain Survival School.


Survival Instructor

Former Cavalry Scout with the United States Army. As a child Jeff ‘Bushwacker’ was taught the importance of surviving off the land and to never take more than you need. From building primitive shelters to making tools from just the sources around him, Jeff took this knowledge with him into the U.S. Army where they proved to be most effective during his career. Jeff has attended the following schools:

Cavalry Scout School
Warrior Leadership School (WLS)
Combat Lifesaver School (CLS)
Mountain Winter Warfare Course (Cold Climate Survival Schools)


Firearms Instructor

Kaloyan has been a long time supporter of GDSO all the way back to 2018. He`s a well known figure in the tactical community in Bulgaria with a vast amount of skills ranging from running various weapons, gear selection, tactics, medical, climbing/rappelling, and NVG operations. He has Travelled around the world with some of the best special forces – Bulgarian SOBT, Israeli IDF, American Marine Corps and more. Kaloyan has also taken an integral role participating in rescue and search missions in Bulgaria. Some courses Kaloyan has attended are:

Tactical Rifle and Handgun
CQB Fundamentals
Tactical Medicine
Fast Rope Insertion / Extraction Systems
Basic Land Navigation
Weapon Maintainer


USA Firearms Instructor

Former Crash / Rescue, United States Marine deployed to Afghanistan OEF. After went Private Military Contracting overseas. Foreign Internal Defense, Security and COIN contracts. Utilized small-space expertise in Israel with IDF Engineering team and Israeli Ministry of Defense. Previous experience includes working for or in support of:

Department of Defense (DoD)
Department of State (DoS)
Israeli Ministry of Defense
Israeli Defense Force (IDF)
Other Government Agencies (OGA)


USA Firearms Instructor

Former United States Marine. A Military brat that decided to follow in his father’s footsteps and become apart of the Most “Elite” Military Organization in the world. Throughout his career in the Marine Corps, he remained a qualified Expert in both Rifle and Pistol Platforms. Augustine always strives to better himself and others around him. His previous experience includes:

USMC Company High Shooter
Marine Corps Combat School
Consecutive Rifle/Expert Awards
Haley Strategic D5 Handgun Operator Course 06/16-18/2020
Certified NRA Pistol Coach


If you have a skillset that could add value to our organization, we want to hear from you! Apply to become an Instructor.


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