Bruce Newsome, Ph.D., is Lecturer in International Relations at the University of California Berkeley. He consulted to governments on defense acquisitions while at the RAND Corporation in Santa Monica, California, and the Defence Academy of the United Kingdom. His publications include: Making Tanks: How Britain Required, Design, and Produced the Best and Worst of Tanks, 1918-1945 (2015); Homeland Security (2015); Security and Risk Management (2014); Made, Not Born: Why Some Soldiers are Better than Others (2007). 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.