Mike Guardia is an armor officer in the United States Army. He holds a BA and MA in American History from the University of Houston, and obtained his commission there via ROTC in December 2008. His research interests include World War II in the Pacific, and the history of armored and guerrilla warfare. As an author, his previous works include Shadow Commander and American Guerrilla. He is currently stationed at Fort Bliss, TX.

Henry Morshead is a design consultant in the European automotive and aerospace sectors, with clients including Jaguar, Bentley, Citroën and Airbus. He is also a technical sponsor of the Bloodhound supersonic car, contributing digital surfacing and design services. A former officer in the Royal Engineers and illustrator for Jane's, he maintains a keen interest in the design and use of military land and air vehicles.
Henry Morshead is the Chief Designer for the Hill HX50 helicopter. He also works in the automotive and bespoke sectors, with clients including BAC Mono and Arrival, and is a STEM Ambassador with the Bloodhound supersonic car project. A former officer in the Royal Engineers and illustrator for Jane's, he maintains a keen interest in the design and use of military land and air vehicles.