John Geddes is a highly commended ex-SAS warrant officer. He was a sniper specialist and patrol medic, and fought on operations alongside US Delta Force. Later he worked on high-risk protection roles for media clients in Iraq, and he now runs protection training regimes and consults with US state and federal law enforcement agencies. Geddes lives in Orlando, Florida
Alun Rees is a freelance journalist and author. He has covered conflicts across the globe in Africa, the Middle East and Asia. He also covered the two most deadly active shooter events in the history of the UK. He lives in Stockbridge, Massachusetts.