Sihing Dennis began training in martial arts in 1981. In 1985 he attained the rank of First Dan Black Belt in Tae Kwon Do in the Allen Steen lineage, and is recognized in the American Karate Black Belt Association (A.K.B.B.A). He has been training in various martial arts styles since and holds a brown belt in Gracie Jiu Jitsu (Pedro Sauer Jiu Jitsu Association), and Orange Grade-Defence Labs (Defence Lab Association). A former Army infantryman where he learned hand-to-hand combat, squad tactics, close quarter battle training, and multiple weapon platforms. He has deployed to Iraq and is an Operation Desert Storm Veteran. Currently, he is a Law Enforcement Firearms and Defensive Tactics instructor.
- Brown Belt in Gracie Brazilian Jiu Jitsu
- Student Level 1 in Combat Submission Wrestling
- Purple Belt in AMAC's Civilian Tactics Program
- Brown Belt in AMAC's Warriors Legacy Program