Many types of disasters, ranging from natural disasters to human-made events, have the potential to affect healthcare. Emergency management is the process by which an individual, facility, and/or community uses mitigation strategies to become better prepared for, able to respond to, and recover from all types of disasters/emergencies and mass casualty events. To accomplish these goals, an all-hazards approach must be used. Emergency management is a multidepartmental, multiagency endeavor that requires coordination and communication among many groups to be most effective. It is essential that infection preventionists participate in all phases of the emergency management process to decrease the mental health impact, costs, morbidity, and mortality related to mass casualty incidents.