From those to whom much is given, much is expected.
The AGB Institute is a vehicle for our instructors to share their talents, along with the expectation that growth and success are rarely achieved without effort.
Dr. Denitra D. Griffin
Dr. Denitra D. Griffin is Co-owner and Executive Vice-President of the AGB Institute. In addition, she serves as the Chief Executive Officer of the Always Giving Back Foundation, AGB’s charitable arm. Dr. Griffin holds a Bachelor of Science in Business Administration from Loyola University, a Master’s in Early Childhood Education from Roosevelt University, and a Doctorate in Educational Leadership from DePaul University.
John Griffin, Jr.
John Griffin, Jr. is the CEO and Founder of the AGB Institute. He holds a Master of Public Administration degree from Roosevelt University and a Bachelor of Science in Commerce from DePaul University. An authority in security and risk mitigation, Griffin has been involved in high-level security prevention and investigations for more than 16 years and has extensive local and national experience. He was trained by the U.S. Department of Defense, Department of Homeland Security, and the Secret Service in computer forensics. Griffin is a certified Forensic Expert Witness and continues to collaborate with local, state, and federal law enforcement agencies.
Johnny R.C. Tyler
Johnny R.C. Tyler is the Chief Training Officer at the AGB Institute. He received his Associate in Applied Science degree with Honors from Kennedy King College and a Bachelor of Arts with Honors from North Park University and Theological Seminary. He also holds a Master of Divinity from the D.R. Bell Apostolic Bible College (formerly Midwest Apostolic Bible College) and is a past dean of that college. He holds two honorary doctoral degrees: a Doctor of Divinity and Doctor of Humane Letters from the Bible Artillery Training Seminary. In addition, Tyler holds credentials as a Certified Ethics Associate, a Six Sigma Black Belt Professional, and a Life Coach and Leadership Development Instructor.
Darryl S. Griffin
Darryl S. Griffin is a certified Range instructor, Illinois Concealed Carry instructor and 40-Hour Armed Guard Training instructor at the AGB Institute. He also is Director of Operations at AGB Investigative Services. Griffin has a Business Management degree from Southern Illinois University. He is certified with the National Rifle Association and is an Illinois Firearm Control Card holder and Permanent Employee Registration Card (PERC) holder.
Dr. Darryl Stroud
Dr. Darryl Stroud is a former U.S. Marine who holds a Doctorate in Business Administration from Argosy University. He also has a Masters in Public Safety Administration and a Masters in Law Enforcement Management from Calumet College of Saint Joseph. His educational certificates including the following: from Harvard University, ‘Senior Executives in State and Local Government’; from Northwestern University, ‘350 Hours School of Police Executive Staff and Command;’ and from State of Illinois, ‘State of Illinois Teacher’s Certification’.
Steven D. Griffin
Steven D. Griffin is a certified Illinois Concealed Carry instructor and 40-Hour Armed Guard Training instructor at the AGB Institute. He also is Director of Operations at AGB Investigative Services and has more than 17 years of experience in private security. Griffin has a Business Administration degree from Olive-Harvey Community College. He is Range Safety and National Rifle Association certified. In addition, he is an Illinois Firearm Control Card holder and a Permanent Employee Registration Card (PERC) holder.