National Disaster Medical System
National Disaster Medical System (NDMS) is an agency within the Federal Emergency Management Agency, Department of Homeland Security, established by the Public Health Security and Bioterrorism Preparedness and Response Act of 2002, Public Law 107-188. The NDMS provides medical-related assistance to respond to the needs of victims of public health emergencies. Participants in the NDMS are volunteers who serve as intermittent Federal employees when activated. For purposes of USERRA coverage only, these persons are treated as members of the uniformed services when they are activated to provide assistance in response to a public health emergency or to be present for a short period of time when there is a risk of a public health emergency, or when they are participating in authorized training. See 42 U.S.C. 300hh-11(e).