The Oklahoma Medical Reserve Corps (MRC) originally consisted of four separate Medical Reserve Corps (MRC) programs; these were combined into one statewide program in 2004. Since that time, the OKMRC has expanded to include 33 local units, and over 3,200 volunteers. Administration of the state program is housed at the State Department of Health.Other examples of disasters and threats that could require mobilizing and deployment of MRC volunteers include:Biological and chemical threatsExplosionsNuclear blastsRadiation threatsNatural disasters, such as tornados and floodingMRC volunteers are not limited to healthcare professionals - non-health field volunteers and students can play an important role in helping the medical teams in critical non-technical areas.The Oklahoma Medical Reserve Corps Stress Response Team (SRT) provides mental health response services in the acute aftermath of state, local and national disasters or other catastrophic events. SRT members perform, one or more, of five roles when providing disaster psychosocial assistance. The SRT has been in existence since 2009 and is comprised of volunteers from all areas of the state. SRT membership is made up of licensed mental health professionals and others interested in volunteering to provide behavioral and emotional support to those affected by disaster. All SRT members are encouraged to integrate with their local MRC units. SRT members are required to complete an application for the Oklahoma Medical Reserve Corps, to be found on-line at: www.okmrc.org. SRT members must pass the required background check, be accepted as a member of the OKMRC, and complete the minimum training requirements specified by the OKMRC. All licensed mental health professionals who are members of the OKMRC are members of SRT.