There are many federal alert systems in our country, each tailored and unique to different sectors of our society: transportation, defense agriculture, and weather for example. There alert systems fill vital and specific requirements for a variety of situations in both the commercial and government sectors. The Homeland Security Advisory System will provide a national framework for these systems, allowing government officials and citizens to communicate the nature and degree of terrorist threats. This advisory system characterizes appropriate levels of vigilance, preparedness and readiness in a series of graduated Threat Conditions. The protective Measures that correspond to each Threat Condition will help the government and citizens decide what action they take to help counter and respond to terrorist activity. Based on the threat level, Federal agencies will implement appropriate Protective Measures. States and localities will be encouraged to adopt compatible systems.