Critical Incident Stress (CIS) Emergency Service Worker's (ESW's) can experience excitement from saving property from destruction and the ultimate satisfaction of saving a life, but the exhilaration and thrills can come to a holt when ESW's are faced with an occupational hazard called Critical Incident Stress (CIS).(Mitchell 86). A critical incident does not have to be a major disaster, but is any situation faced by Emergency Service Worker's (ESW) that causes them to experience strange reactions which may have the potential to interfere in th ....