Dr. Kirk Yeager received his BS in Chemistry from Lafayette College and PhD in Inorganic Chemistry from Cornell University. He worked as a research scientist and became the associate director of R&D at the Energetic Materials Research and Testing Center (EMRTC) in Socorro, New Mexico. While in the Land of Enchantment, he also held the position of adjunct professor in the New Mexico Tech chemistry department. For ten years, he served as a physical scientist and forensic examiner for the FBI Laboratory’s Explosives Unit, where he deployed as a bombing crime scene investigator to dozens of countries. Currently, Dr. Yeager is the FBI’s chief explosives scientist. Dr. Yeager has nearly thirty years of experience with improvised explosives and IEDs. Over the course of his colorful career, he has served as a subject matter expert for the National Academies of Sciences, worked as a technical adviser for MythBusters, and been the subject of a feature article in Popular Mechanics. He is an avid geocacher and holds the rank of Black Belt in Danzan Ryu Jujitsu. His academic prowess is surpassed only by his charm and humility.

Selene Yeager is Kirk Yeager’s sister. At least that’s how high school teachers referred to her, right after “Ron Yeager’s daughter,” until everyone realized that she was a little bit like them…and a whole lot of something different. Terrible at chemistry and good at sneaking out of the house, she was single-minded in the pursuit of two things: riding a bike and expressing herself in the written word. The former has taken her around the world. The latter has helped her build a career in storytelling and journalism and as author, coauthor, and contributor to nearly thirty books, granted her a nomination for a National Magazine Award for excellence in service journalism, and given her the great honor of bringing her brother’s work to the world through this book.