Nicholas Sansbury Smith is the New York Times and USA Today bestselling author of the Hell Divers series, the Orbs series, the Trackers series, the Extinction Cycle series, the Sons of War series, and the new E-Day series. He worked for Iowa Homeland Security and Emergency Management in disaster mitigation before switching careers to focus on storytelling. When he isn't writing or daydreaming about the apocalypse, he enjoys running, biking, spending time with his family, and traveling the world. He is an Ironman triathlete and lives in Iowa with his wife, daughter, and their dogs.