Dr. Ritchie is the Chief Clinical Officer, Department of Mental Health, for the District of Columbia. She recently retired from the Army and concluded five years as the Director of the Proponency of Behavioral Health Director at the Office of the US Army Surgeon General. She has held numerous leadership positions within Army Medicine, to include the Psychiatry Consultant. She trained at Harvard, George Washington, Walter Reed, and the Uniformed Services University of the Health Sciences, and has completed fellowships in both forensic and preventive and disaster psychiatry. She is a Professor of Psychiatry at the Uniformed Services University of the Health Sciences. An internationally recognized expert, she brings a unique public health approach to the management of disaster and combat mental health issues. Her assignments and other missions have taken her to Korea, Somalia, Iraq, and Cuba. She has over 130 publications, mainly in the areas of forensic, disaster, suicide, ethics, military combat and operational psychiatry, and women’s health issues. Major publications include “The Mental Health Response to the 9/11 Attack on the Pentagon”, “Mental Health Interventions for Mass Violence and Disaster” and “Humanitarian Assistance and Health Diplomacy: Military-Civilian Partnership in the 2004 Tsunami Aftermath”. She is currently the senior editor on a forthcoming Military Medicine text on Combat and Operational Behavioral Health, the Textbook of Forensic Military Mental Health, and the Therapeutic Use of Canines in Army Medicine.