conditions and actions are monitored and reported for each Defense Infrastructure Sector. Each sector must develop a written Defense Sector Assurance Plan that includes a compendium of sector incidents for monitoring and reporting. The sector incident compendium is made up of three types of incidents: Nationally defined reportable incidents DoD defined reportable incidents, and Sector-defined reportable incidents. DoD critical asset owners, installations, and sector CIAOs determine the DoD and sector-defined incidents. Each of the reportable incidents or classes of incidents must include the following components: Who should monitor the incident How soon the incident must be reported Which information elements the incident should contain How the incident reporting should be routed What follow-up actions are required The National Infrastructure Protection Center (NIPC) is the primary national warning center for significant infrastructure attacks. Critical asset owners, DoD installations, and Sector CIAOs monitor the infrastructure daily. Indications of an infrastructure incident are reported to the National Military Command Center, or NMCC. If indications are on a computer network, they are also reported to the Joint Task Force Computer Network Operations (JTF-CNO). The NMCC and JTF-CNO assess the indications and pass them to the NIPC and appropriate DoD organizations. When the NIPC determines that an infrastructure event is likely to occur, is planned, or is under way, it issues a national warning. For DoD, the NIPC passes its warnings and alerts to the NMCC and JTF-CNO. These warnings and alerts are then passed to the DoD components. The warning may include guidance regarding additional protection measures DoD should take. Phase 4: Mitigation Phase 1 of the CIP life cycle provided a layer of protection by identifying and assessing critical assets and their vulnerabilities. Phase 2 provided another layer of protection by remediating or improving the identified deficiencies and weaknesses of an asset. Even with these protections and precautions, an infrastructure incident was still possible. When it does the Indications and Warnings phase goes into effect. The Mitigation phase (Phase 4), is made up of preplanned coordinated actions in response to infrastructure warnings or incidents. Mitigation actions are taken before or during an infrastructure event. These actions are designed to minimize the operational impact of the loss of a critical asset, facilitate incident response, and quickly restore the infrastructure service. A primary purpose of the Mitigation phase is to minimize the operational impact on other critical Defense Infrastructures and assets when a critical asset