Dr. Ray is a physician volunteer for both the North Carolina State Registry of Volunteers (part of the State Medical Response System) and North Carolina-1 Disaster Medical  Assistance Team.   A Disaster Medical Assistance Team (DMAT) comprises professional medical personnel supported by a cadre of logistical and administrative staff designed to provide emergency medical care during a disaster or other event. In mass casualty incidents, their responsibilities include triaging patients, providing austere medical care, and preparing patients for evacuation. In other situations, DMATs may provide primary health care or augment overloaded health care staffs. DMATs are part of the National Disaster Medical System (NDMS), which is located within the federal Department of Health and Human Services.