Bill Nash, M. D., CAPT., MC., USN. Ret. (introduction) was awarded the bronze star medal for his service in Iraq. He is Former director of Combat and Operational Stress Control programs for the U.S. Marine Corps, part of the National Center for PTSD and is an Assistant Clinical Professor of Psychiatry at the University of California, San Diego. Dr. Nash has also co-edited a book on combat stress injuries.