MEET THE TEAM
At Centerline Tactical, we’re not instructors first... we’re protectors first. Our team combines elite military experience and global martial arts mastery to deliver no-nonsense training that works when it counts. We don’t teach theory. We teach what kept us alive.
ADAM SEEGMILLER
Elite Special Forces, Close Protection Operator
Adam brings over two decades of elite military experience to HAVOC.
As a member of multiple elite special operations units, he has served in combat zones across the globe, supporting critical missions and high-stakes operations.During his military career, Adam spent one-third of his time as a high-threat bodyguard in hostile environments where he wasn't authorized to carry weapons.
This experience proved critical – he knew he needed devastating hand-to-hand techniques that would work instantly against armed attackers when his life and the lives of his clients were on the line.His expertise in close quarters combat (CQC) was forged in the most dangerous environments on earth, where split-second decisions mean the difference between life and death.
Adam has trained alongside elite units including the U.S. Navy SEALs, Delta Force, British SAS, and Australian SASR, giving him an unparalleled understanding of combat tactics that work when failure is not an option.After years of testing various martial arts systems in real-world violence,
Adam developed HAVOC to address the critical flaws in traditional training methods. His system has been taught to military personnel, law enforcement officers, and civilians who need reliable self-defense skills that work immediately.
ANDREW MACDONALD
Brazilian Jiu-Jitsu Black Belt & Tactical Combat Specialist
Andrew brings over 20 years of martial arts experience to HAVOC.
As a distinguished Brazilian Jiu-Jitsu black belt under Wagnney Fabiano and Leo Santos of Nova União International, Andrew has competed at the highest levels of the sport.
His martial arts journey began in 2001 in China with Sanda (Chinese kickboxing) before transitioning to MMA, Sambo, and eventually Brazilian Jiu-Jitsu.In 2014, he co-founded Arete Brazilian Jiu-Jitsu in Bangkok, Thailand, creating a hub for serious combat sports training.
Andrew's extensive background in both traditional martial arts and real-world application gives him unique insight into what works—and what doesn't—when lives are on the line.
His teaching philosophy emphasizes technical precision, practical application, and the underlying principles that make HAVOC so effective regardless of the student's size or strength.