Dr. Greenstone has been in private practice for over 55 years and has taught for 8 years in the Disaster and Emergency Management Program at Nova Southeastern University, Kiran C. Patel College of Osteopathic Medicine. He is a Supervisory Mental Health Specialist with the Disaster Medical Assistance Team, National Disaster Medical System, United States Department of Health and Human Services. Dr. Greenstone served as the Director of Psychological Services for the Fort Worth, Texas Police Department and has been a licensed and commissioned Peace Offi cer for over 40 years. He recently retired as a Colonel with the Texas Medical Brigade, Texas Military Forces. Dr. Greenstone has extensive publications and multiple disaster deployments. He was selected as Professor of the Year in 2019. Courses Taught by Dr. Greenstone in the Master of Science in Disaster and Emergency Management (MSDEM) Program • DEM 6440 Conflict in Times of Disaster • DEM 6120 Psychosocial Dimensions of Disaster • DEM 6410 Emergency Preparedness Public Policy and Law.