Sean Gray is a 27-year veteran of the fire service, currently serving as a captain with Cobb County, GA, Fire and Emergency Services in metro Atlanta. He has a bachelor’s degree in fire safety engineering and is working on his master’s degree at the Naval Post Graduate School. Gray is an appointed member of the UL Firefighter Safety Research Institute Advisory Board and an NFPA committee member for Fire Hose and Fire Service Training Facilities. He recently co-authored “The Evolving Fireground” textbook. He runs the website StopBelievingStartKnowing.com, and delivers evidence-based tactics training courses across the U.S.