Barry De Seguin brings a wealth of real-world experience to the mats, with a professional background spanning decades in public safety and law enforcement. He served as a Sheriff and Correctional Peace Officer before becoming the Use of Force Training Coordinator and Law Enforcement Training Sergeant with Public Safety and Emergency Services. Over the course of his career, Barry was recognized as a subject matter expert and master instructor in control tactics, also serving as a Use of Force Reviewer and certified Force Science Facilitator.

At Vanguard, Barry teaches with an emphasis on practical application, safety, and clear instruction. His approach blends the discipline of martial arts with proven training methods from his law enforcement career, giving students a structured and effective path for learning. He encourages awareness, discipline, and adaptability while maintaining a supportive environment for every level of student.

Beyond the mats, Barry is committed to mentorship and personal growth. With black belts in both Brazilian Jiu-Jitsu and Mo Kempo Karate, he understands the importance of persistence, respect, and resilience. His goal is to help students build not only technical skill, but also confidence and self-control that serve them in all areas of life.