Stu Jones is a veteran law enforcement officer. Over the course of his career, he has worked as an investigator, an instructor teaching SWAT close quarters and defensive tactics, and as a member and team leader of a multi-jurisdictional SWAT team. He is also trained and qualified as a law enforcement SWAT sniper, as well as in hostage rescue and high-risk entry tactics. Gareth Worthington BSc PhD is a trained marine biologist and holds a doctorate in comparative endocrinology. Gareth works in the pharmaceutical industry helping to educate the world's doctors on new cancer therapies.