Bruce Newsome, PhD, is Assistant Teaching Professor of International Relations at the University of California, Berkeley. Previously he consulted to the US Army on weapon acquisitions, force structure, training, and logistics, while employed by the RAND Corporation in Santa Monica, California. He went on to teach at the Defence Academy of the United Kingdom, where he passed the AFV Design courses. He first served on M1 Abrams tanks in the Pennsylvania National Guard. He now volunteers in the Tank Museum's archives and workshops. Greg Walton served with the US Army on the M60, and on the M1 Abrams in the Gulf War. Now with the FBI, Greg has been involved in counter-terrorism work in Afghanistan and more recently with the FBI's SWAT (Special Weapons and Tactics Teams).