About our Instructors

Double Tap Academy is blessed with a team of high quality and experienced instructors who are passionate about helping to educate newer shooters and coach experienced shooters.  As students consider courses to take, it is important that they know who is teaching them and their qualifications.  While these qualifications not only help educate in the classroom and on the range, they can be critically important in a courtroom.


Rob Keller

Mr. Keller started Double Tap Academy in 2012 as a direct result of attending some training courses where he felt law abiding citizens were not receiving an adequate understanding of the legal aspects of self-defense.  He is passionate about educating students in the effective use of their firearms and the legal aspects.  He has over 300 hours of firearms training and is an NRA Certified Instructor in the areas of: Basic Pistol, Personal Protection Inside the Home, Personal Protection Outside the Home, Rifle, and Chief Range Safety Officer.  Additionally, he is certified Massad Ayoob Range Instructor.  He is a graduate of Massad Ayoob’s MAG40, Rob PIncus’ Combat Focus Shooting and Advanced Handgun, Tom Given’s Pistol Instructor Development, Doc Gunn’s Tactical Treatment of Gunshot Wounds, GSL’s Advanced Pistol, and Fortress Defense’s Tactical Carbine programs.   He is an certified Illinois Concealed Carry Instructor.

He is a member of the Armed Citizens Legal Defense Network, National Rifle Association (life), the Illinois State Rifle Association, and the National Organization of Church Security and Safety Management.  Rob has been married to his wife Diane for 24 years and attends Vale Community Church in Bloomington.

Brian Thielen

Brian Thielen is a principal with Thielen, Foley & Mirdo, LLC, a personal injury law firm in Bloomington, Illinois. He is a trial lawyer with more than 30 years of experience in the courtroom, who concentrates his practice in personal injury and commercial litigation, and is a member of the McLean County and Illinois State Bar Associations.

Mr. Thielen is a graduate of several firearms training courses at Front Sight Firearms Training Institute in Nevada.   He is a is an NRA certified instructor in Pistol and Rifle, and is an Illinois certified Concealed Carry Instructor. He is passionate about the 2nd Amendment and about teaching law abiding citizens the legal aspects of self-defense.  His goal is to help people understand and practice the safe use of their firearm, and to invest them in the critically important need to protect the 2nd Amendment.

Additionally, he is a student of the Korean martial art of Tae Kwon Do, having achieved the rank of Black Belt.

Mr. Thielen attends Eastview Christian Church, where he serves as a Bible teacher in the men's ministry.  He has been married to Jeralynne for 29 years, and has two beautiful daughters -  both of whom also practice the discipline of Tae Kwon Do and who, along with his wife, also have trained at Front Sight Firearms Training Institute.

Dr. Brad Barnes

Dr. Bradley W. Barnes has been providing outstanding dental care for over 25 years! He earned his dental degree from University of Iowa College of Dentistry and is a Fellow of the American College of Dentists and the International College of Dentists.

Dr. Barnes is a designated public speaker for the Illinois State Dental Society, and speaks for the P.A.N.D.A. program (a program which trains Dental Professionals to recognize and report child and elder abuse). He is also very active in several professional organizations, including the American Dental Association (member of the House of Delegates), Illinois State Dental Society (member of the Board of Trustees, House of Delegates and General Chairman of the 2010 Annual Session and Chairman of the 2011 Capitol Conference), and the McLean County Dental Society (past president, vice-president, secretary and treasurer).

Dr. Barnes gives back to the community by volunteering with the Boys Scouts of America, the Jeremiah Sportsmen, and his local church. He is a past Chairman for the Illinois State Mission of Mercy.  He is a certified NRA Instructor and a certified Illinois Concealed Carry Instructor.

In his leisure time, Dr. Barnes enjoys the outdoors, hunting, fishing and hiking.

Todd Roseberry

Todd Roseberry is a partner in the Bloomington, Illinois law firm of Schwulst & Roseberry, P.C. Mr. Roseberry has been in the general practice law since 1998 and concentrates in the areas of family law, criminal defense and firearm rights. He frequently serves as a court-appointed attorney for children in difficult family cases. He is a member of the Illinois State Bar Association and the McLean County Bar Association.

Prior to becoming a lawyer, Mr. Roseberry served as a Medical Laboratory Technician an Combat Medic in Illinois Army National Guard from 1985-1993. He obtained his bachelor's degree in philosophy from Eastern Illinois University and his law degree from the University of Illinois. He is married and has three children. He attends the Greek Orthodox Church of the Three Hierarchs in Champaign, Illinois where he teaches the high school catechetical class.

Mr. Roseberry has been in instructor with Double Tap Academy since 2013 where he gives lectures on the legal aspects of the use of deadly force and gun ownership. He is an NRA Basic Pistol Instructor and an Illinois Concealed Carry Instructor. His goal is to contribute to the development of a culture of responsible gun ownership by informing gun owners of their rights and responsibilities.  He loves shooting guns of all types but particularly enjoys shooting his black powder revolvers.  When he's not shooting guns, he's making primitive archery equipment or learning the art of blacksmithing.

Dave Stephens

Lt. Stephens is retired from the Normal Police Department where he served from 1983 to 2012.  He is a graduate of the University of Illinois’s Police Training Institute’s Master Firearms Instructor Program and Northwestern University School of Police Staff and Command.  He has been a police firearms instructor since 1990 and an Illinois Hunter Safety Instructor for 10 years.  Lt. Stephens has over 2000 hours of firearms training.  He is an Illinois Concealed Carry Instructor. 

He has been married for 36 years and attends St. John’s Church in Minier.

Dr. Larry Heisner, DMin

Larry is a retired organization professional and businessman.  He is also an Ordained Minister  with experience as a Church Pastor, Bible College faculty and Certified Police Chaplain.

He grew up in a hunting family in deep Southern Illinois and has been around guns his entire life.  His passion is safety in all aspects of firearm ownership, training and use.  He has over 100 hours of formal Classroom and Range training plus the equivalent of seven years of US Army infantry and Missouri National Guard training.

He is a NRA Certified Pistol Instructor, NRA Certified Range Safety Officer and an Illinois Approved Conceal Carry Instructor.  Larry is a NRA Life Member as well as a member of ISRA, GSL, Illinois Carry and Armed Citizen’s Defense Network. 

He has been married 51 years and attends Eastview Christian Church.

David Brinkoetter

David operated a highly successful commercial heating, air conditioning, and plumbing contracting firm in Decatur for many years.  He retired in 2012.  He has expanded his interest in firearms, self-defense, and target shooting.  In addition to assisting in range activities, he assists Double Tap Academy in the retail side of the business with inventory, ordering, transfers, and advising clients in equipment, firearms, ammunition, and accessories. 

David has been married to his wife Gale since 2012.  He has 3 sons, 1 daughter, and 9 grandchildren.

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