He is a graduate firearms instructor from the Secret Service Academy, FBI, DEA and Federal Law Enforcement Training Center and holds the rating of Distinguished Weapons Expert with the Department of Homeland Security in revolver, semi-automatic pistol, shotgun, sub-machinegun and patrol rifle.

John is founder and president of Spartan Tactical Training Group and currently serves as the Director of Training. He has served as a firearms training consultant with the International Association of Chiefs of Police and Bureau of Alcohol, Tobacco, Firearms & Explosives – firearms interdiction training programs, and has also served as an Adjunct firearms instructor with the Department of Homeland Security – Federal Flight Deck Officers (FFDO) training program.

John has also previously served as an Executive Board Member with the University of Illinois – Police Training Institute Alumni Board (2013 – 2017), Special Events Coordinator with the Indiana SWAT Officers Association (2012 – 2015) and as the Director Training for the DS Arms Law Enforcement Training Division (2005 – 2012).

He has served as a firearms training consultant with the International Association of Chiefs of Police and Bureau of Alcohol, Tobacco, Firearms & Explosives - firearms interdiction training programs, and has also served as a contract firearms instructor for the Department of Homeland Security - Federal Flight Deck Officers (FFDO) program.

John has consulted and / or presented training programs with the following national and international law enforcement training associations and organizations:

• International Assn of Law Enforcement Firearm Instructors (IALEFI)

• Beretta - All 92, 96 and Cougar series pistol groups
• Colt - All "O" frame pistol groups / AR-15 / M-16 / M-4 rifle groups
• DS Arms - All FAL SA58 rifle groups
• Glock - Law Enforcement pistol line (re-certified 2025)
• Heckler & Koch - All MP-5 groups and all USP groups
• Robinson Armament - All XCR rifle groups
• Sigarms - All DA/SA, DAO and DAK pistol groups (re-certified x 3)
• Sigarms - All P320 series pistol groups
• Smith & Wesson - All 3rd generation series pistol groups and
  M&P series pistol groups (re-certified 2015)
• Springfield Armory - All XD / XDM series pistol groups (re-certified x 2)
• PepperBall Armorer Certification Course

• International Assn. of Law Enforcement Firearm Instructors (IALEFI)
• International Law Enforcement Educators & Trainers Association (ILEETA) - Charter Member
• National Law Enforcement Firearms Instructors Association (NLEFIA) - Life Charter Member
• American Society for Law Enforcement Trainers (ASLET) - Life Member
• University of Illinois - Police Training Institute Alumni - Life Member
• National Shooting Sports Foundation (NSSF) - Business Member
• Illinois State Rifle Association (ISRA) - Life Benefactor Member
• North Suburban Police Pistol League - Honorary Life Member
• National Rifle Association (NRA) - Life Benefactor Member
• Police Marksman Association (PMA) - Life Member
• International Firearms Specialist Academy (IFSA)
• Midwest Tactical Officer's Association (MidTOA)
• Michigan Tactical Officer's Association (MTOA)
• National Tactical Officer's Association (NTOA)
• Georgia Tactical Officer's Association (GTOA)
• Illinois Tactical Officer's Association (ITOA)
• Indiana SWAT Officer's Association (ISOA)
  
• Illinois Police Association (IPA)

• International Law Enforcement Educators & Trainers Association
  2nd Annual ILEETA Cup Match - Overall Match Winner - 2008
• International Assn of Law Enforcement Firearms Instructors
  Annual Memorial Match - Overall Match Winner - 2007, 2010
• MTG - Annual IDPA Invitational Match
  Overall Match Winner - 2004, 2005
  - 2nd Place Overall - 2000, 2003
• Police Training Institute - Annual Combat Challenge Match
  Overall Match Winner - "Top Gun" Award - 2004, 2005, 2006
  - 2nd Place Overall - 2001, 2002, 2003, 2007
• North Suburban Police Pistol League - Combat Duty Pistol Class
  Overall League Champion - 2004, 2005, 2006, 2007
  - 2nd Place Overall - 2003
• North Suburban Police Pistol League - Off-Duty Weapon Class
  Overall League Champion - 2005, 2006, 2007
  - 2nd Place Overall - 2003, 2004
• Secret Service Academy - Firearms Instructor Course # 192
  Top Gun Award Recipient
• FBI - Firearms Instructor School # 06-01
  Overall Top Shooter Award
• DEA - Firearms Instructor School - Overall Top Shooter
• FLETC - Firearms Instructor School # 005
  Keith Connelly Top Gun Award Recipient
• FBI - Basic SWAT School - Overall Top Shooter Award
• State of Illinois - Governors Twenty Award - 1999 and 2007
  

John can be reached by e-mail at: jkrupa@teamspartan.com