Doug has been training, studying, and coaching martial arts for over twenty-five years. As a professional instructor, his experience teaching adults has included curriculum design at all levels and literally tens of thousands of hours of formal instructional training and coaching. While on active duty he was the Head Instructor for the Marine Corps Martial Arts Program's lead school in Quantico, VA and was a combatives instructor for over five years for the Marines. He has extensively trained in Weapons Handling (firearms, bladed, and others), Combative Engagements, Wrestling, Boxing, Judo, Grappling, Thai Boxing , and Brazilian Jiu-Jitsu (BJJ), in which he is a Black Belt under the world famous Leo Dalla. His competition resume includes an undefeated Thai boxing record and multiple Pan-Am medals at the black belt level. He is also a CrossFit Level One Instructor.