William Desy

William Desy

Lead Instructor

William Desy is a State Certified Firearms Instructor under the California Bureau of Security and Investigative Services and the California Department of Justice. Mr. Desy has been a Nationally Certified Firearms Instructor since 1992. He has worked in the Security, Loss Prevention, and Private Investigations field for over thirty years.  Currently an NRA Certified Law Enforcement Handgun and Shotgun Instructor, NRA Training Counselor (Certified Instructor Trainer) and he is an Approved CCW Firearms Instructor for San Diego, Orange County, and Ventura County, and numerous Northern California Sheriff’s Departments. Mr. Desy has worked under contract with the United States Navy’s Force Protection Program, Armed Sentry Course; Providing small arms instruction with four different weapons systems; M9, Mossberg 590, M16, and M14. A life-long student of Martial Arts, he is a Certified Self-Defense Instructor and Defensive Tactics Trainer with extensive training in various Defensive Methods. Mr. Desy is also a CFE (Certified Fraud Examiner), State Licensed Private Investigator, Loss Prevention and Security Consultant. We offer world class customized training in Armed, and Unarmed, Defensive Tactics and Personal Protection strategies to suit your individual, family, or corporate needs.

I have a strong passion for teaching Self Defense and Defensive Firearms. Not everyone gets to do what they are passionate about and believe in as strongly as I do…. what you learn from my classes may one day save your life or the life of a family member! …The greatest compliment I have ever received is the referral from my students to train their spouses, children, and friends. Thank you, for trusting me to help you protect your loved ones from the evil that is present in this world. -William Desy 



      • Member I.L.E.E.T.A.
      • Certified Glock Armorer
      • NRA Training Counselor
      • NRA Certified Rifle Instructor
      • NRA Certified Pistol Instructor
      • NRA Certified Shotgun Instructor
      • NRA Certified Chief Range Safety Officer
      • NRA Certified Personal Protection Instructor
      • NRA Certified Home Firearm Safety Instructor
      • BSIS State Certified Baton Training Instructor
      • NRA Certified “Refuse to be a Victim” Instructor
      • BSIS State Certified Firearms Training Instructor
      • California Department of Justice Certified Instructor
      • NRA Law Enforcement Handgun and Shotgun Instructor
      • Certified Monadnock Expandable Baton Advanced Instructor
      • Certified Self-Defense Instructor-McClintock Self Defense
      • Defensive Tactics Trainer-Public Safety Training Association
      • Self Defense Instructor – R.A.D. Rape Agression Defense Systems
      • American Heart Association – BLS First Aid/CPR/AED Instructor