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Gemini Defense Strategic Outcomes

The #1 Tactical Training Provider in Bulgaria! Specializing in Firearms, Survival and Medical Courses.


Gemini Defense Strategic Outcomes (GDSO; GDSO Group); is a team of past and present military, contractors and civilians who share a passion for firearms, defense, survival, and medical training. Over the course of 10 years, we have delivered training to some of the worlds most elite forces, spanning from North America to Asia. We take a serious approach in our courses to ensure that each client leaves with a better understanding than what they came to us with.


Understanding the community and environment that we operate in is at the front of our mind. Our courses benefit the local economy in ways such as: catering food from local restaurants, providing foreign students with the ability to tour the city, as well as supporting local range owners, and firearms/ammunition manufacturers.


We understand the duties and sacrifices made by first responders around the world. All currently active first responders will receive a 10% discount on of our courses. Additionally, 50% of profits from merchandise are donated to local non-profit organizations which benefit first responders and security professionals in the European Union.




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.

GDSO reserves the right to decline any correspondence we suspect is unethical.


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