When an event affects the Defense Infrastructure, the Incident Response phase begins. Incident Response is the fifth phase of the CIP life cycle. The purpose of the Incident Response phase is to eliminate the cause or source of an infrastructure event. For example, during the 9/11 attacks on the World Trade Center and Pentagon, all non-military airplanes were grounded over the United States to prevent further incidents. Response activities included emergency measures, not from the asset owners or operators, but from dedicated third parties such as law enforcement, medical rescue, fire rescue, hazardous material or explosives handling, and investigative agencies. Response to Defense Infrastructure incidents can take one of two paths depending on whether or not the event affects a DoD computer network.
