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Bill Crooks

Bill served over 27 years in the Missouri State Highway Patrol, retiring in 2001.

During his career, he was stationed in the Kansas City area, the Springfield area, and Stone County.

Having been a high school teacher, prior to beginning his career with the State Patrol, he was tasked with many teaching assignments.  He served as the Troop D (Springfield) Range Master.  He also taught First Aid, CPR, Breathalyzer, Criminal Law Updates to both State Patrol personnel and local law enforcement agencies.
Bachelor of Science in Education, Missouri State University.

Missouri POST Certified Generalist Instructor.

Missouri Post Certified Firearms Instructor.

National Rifle Association Firearms Instructor.

Certified to teach CCW in Missouri and Kansas.

Favorite Quote:    "If it’s worth doing, it’s worth doing right."

John Marcum

Served four years in the US Navy, 1970 to 1974.

John began his career in Law Enforcement in late 1974 in his home town. He was hired by the Springfield Police Department in 1977 and retired in 2003. His career was spent in Uniform Patrol and Criminal Investigations.  John was a Major Crimes Investigator, as well as an Academy Instructor.

Bachelor of Science in Criminal Justice, Drury University
Missouri POST certified Generalist Instructor.

Missouri POST certified Firearms Instructor.

NRA firearms instructor.

Certified to teach CCW in Missouri and Kansas.

Since retirement from the Springfield Police Department, has been commissioned as a Deputy with the Greene County Sheriff’s Office.

Other past teaching positions:

Instructor for the Law Enforcement program at Drury University.

Military/Law Enforcement instructor at Ft Leonard Wood.

International Police Trainer, teaching Pakistani Law Enforcement courses in Islamabad and Quetta, Pakistan.

Favorite Quote:  "Learn like you’ll live forever, live like you’ll die tomorrow."  Mahatma Gandhi

Jeff Crooks

Currently serving 25 years (and counting!) US ARMY Engineers: Lieutenant Colonel (USAR)

Currently serving as a Staff Instructor at the Command and General Staff Officer Course (CGSC) Ft. Leavenworth in the USAR


Working in the field of Mergers and Acquisitions as a Senior Partner with Apex Business Advisors, Kansas City since 1996.

NRA firearms instructor.

Certified to teach CCW in Missouri and Kansas

Favorite quote: Life is short ... Break the rules; Forgive quickly, Kiss slowly, Love truly, Laugh uncontrollably, And never regret anything that made you smile ...

James Harper III

James has been an instructor with Old Coots Firearms Training Services since 2007. He has been a commissioned law enforcement officer in the state of Missouri since 2004 and is still a sworn law enforcement officer. Prior to becoming a law enforcement officer he was a Sergeant in the United States Marine Corps. He was trained as an infantryman and a Marine Security Force Guard. He received an honorable discharge after he completed his enlistment. James is certified by the NRA as a Pistol Instructor and Range Safety Officer. He is also certified to teach the NRA Refuse to Be a Victim program. 

Favorite Quote:"Things do not happen. Things are made to happen."
John F. Kennedy



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