Director and Lead Instructor

Jimmy spent over 15 years in the US Navy SEAL Teams earning the rank of Chief Petty Officer (E7). During that time he earned certifications as a Sniper, Joint Tactical Air Controller, Range Safety Officer for Live Fire, Dynamic Movement and Master Training Specialist. He also served for 7 years as an Operator and Lead Instructor for an Elite Federal Government Protective Detail for High-Risk and Critical environments, to include; Kirkuk, Iraq, Kabul, Afghanistan, Beirut, Lebanon and Benghazi, Libya. During this time he earned his certification for Federal Firearms Instructor, Simunition Scenario Qualified Instructor and Certified Skills Facilitator.


Jimmy has trained law enforcement on the Federal, State, and Local levels as well as Fire Department, EMS and Dispatch personnel. He has traveled across the nation training communities in order to enhance their level of readiness in response to active shooter situations. Graham and his team of experts provide hands-on training in both armed and unarmed solutions to terrorist attacks, active shooter threats and potential life-threatening situations.




Dick Abramson is the Founder and General Manager of Centennial Gun Club. The motto of Centennial Gun Club is EQUIP ● PREPARE ● PRACTICE representing our retail store, training center and shooting range. Abramson believes that firearm ownership is a significant personal responsibility and that anyone owning a firearm should be involved in continuous training and regular practice at the shooting range. Prior to opening Centennial Gun Club in 2012, Abramson lead high-tech corporate turnarounds serving as CEO of public and private companies and understands the importance of keeping the workplace safe and productive. Centennial Active Shooter Response Training Center is an elevated training program developed to help organizations prepare for the workplace violence that is escalating in our country today. This program was developed after discussions with executive management of numerous organizations and understanding their concerns and needs. Abramson serves as the executive leadership of Centennial Active Shooter Training Center. All training is lead by our highly qualified Director and Lead Instructor, Jimmy Graham.


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6649 S. Paris Street
Centennial, CO 80111