- 1966-1971 US Army 19th SFG – Staff Sergeant Weapons Specialist
- US Army Special Forces Small Arms Instructor
- Deputy Sheriff – Washington County SO, Ohio
- 1975 Met Jeff Cooper
- Gunsite Instructor
- One of the FIrst Traveling Firearms Instuctors
- NRA Police Firearms Instructor.
- FBI Certified Firearms Instructor
- 1975 wrote a column for Soldier of Fortune magazine
- Writer for: Guns & Ammo, Combat Handguns, Soldier Of Fortune, American Handgunner
- 1976 – Founding member of IPSC
- 1996 – Founding member of IDPA.
- 2016 – AZTEC Training Services