The National Response Plan (NRP) establishes three operational phases: Pre-Incident, Incident, and Post-Incident for all Incidents of National Significance. These phases and their associated steps are driven by events that occur and resultant decisions and not specifically by time. (DHS, 2007 forthcoming) Thus: (1) Pre- Incident (2) Incident (3) Post-Incident See: Phases of Civil Defense (Nuclear Attack)