Our instructors are experienced in either law enforcement and/or competition.
Art den Dulk
Inside the home protection
Outside the home protection
Specialized in the AR platform
Chief Range Safety Officer
IDPA, USPSA ,GSSF
Art is also a professional pilot based in Modesto.
Airline Transport Rating
Certified Flight Instructor
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 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!