Greg retired as a Lieutenant from the Prince William County Police Department (Washington, D.C. National Capital Region). He spent 25 years serving in multiple assignments, including Patrol, Narcotics, Gangs, K-9, and Special Operations.During his assignment as an Assistant Commander for the department’s full-time SWAT team, he served on several regional, multi-disciplinary committees tasked with preparing for Active Shooter Incidents (ASIs) and Complex Coordinated Terrorist Attacks (CCTAs) within the region.Greg has experience responding to critical incidents such as one of the Beltway Sniper attacks in Manassas, Virginia, as well as an active shooter response at Northern Virginia Community College in Woodbridge, Virginia.In addition to his work with First 30 Group, he instructs Active Shooter / CCTA response and tactical command courses in the United States, Africa, and Asia under three government-funded programs.As part of a research project, Greg has studied over 700 attacks, and personally conducted 25 recorded interviews with survivors throughout the world. This research has provided rare insight into how attacks unfold through the eyes of those who were there, and how civilians are empowered to mitigate the loss of life during man-made disasters.Greg serves on the board of directors for the VTV Family Outreach Foundation, a non-profit charitable organization founded by survivors of the 2007 attack at Virginia Tech, promoting campus safety and assisting survivors of mass attacks throughout the nation.Greg has a unique understanding of human responses during critical life-threatening incidents. He served with the United States Army 24th Infantry Division during Operation Desert Storm and has documented the stories of hundreds of combat veterans as an interviewer with the Voices of Freedom Project at the Americans in Wartime Experience Museum.An avid hiker, he summited Mount Kilimanjaro in 2014, and hiked the Tour du Mont Blanc (variant) in 2024.