"The Nation requires a Homeland Security Advisory System to provide a comprehensive and effective means to disseminate information regarding the risk of terrorist acts to Federal, State, and local authorities and to the American people. Such a system would provide warnings in the form of a set of graduated 'Threat Conditions' that would increase as the risk of the threat increases. At each Threat Condition, Federal departments and agencies would implement a corresponding set of 'Protective Measures' to further reduce vulnerability or increase response capability during a period of heightened alert. This system is intended to create a common vocabulary, context, and structure for an ongoing national discussion about the nature of the threats that confront the homeland and the appropriate measures that should be taken in response. It seeks to inform and facilitate decisions appropriate to different levels of government and to private citizens at home and at work."
Lessons Learned Information Sharing (LLIS)