About Us


Our instructors are experienced in either law enforcement and/or competition.

Art den Dulk




NRA Instructor


          Inside the home protection

          Outside the home protection


          Specialized in the AR platform


    Chief Range Safety Officer

Competitive Shooter


Art is also a professional pilot based in Modesto.

     Airline Transport Rating

     Certified Flight Instructor

Art den Dulk is a professional pilot


Sal Rodriguez   

2001 – 2003, Turlock Police Officer

2005 – 2010 Safety First Shooting Assoc. Range Instructor

2008 – 2016, Security Contractor – Specialized in Diplomatic Threat Assessment

2009 – Present, NRA Instructor – Pistol, Inside the Home

2012 – Present, Sentry Defense Solutions Instructor

2015 – 2016, 88 Tactical Academy  – Vehicle CQB Instructor

2010 – 2014, ICE Training – School Attack Response Instructor

IDPA Competition Shooter

Glock Sport Shooting Foundation Shooter



John Hall

John has moved to Indiana. We would like to thank John for his help for the first 10 years at DTS.We will miss your friendship and your knowledge!