Homeland Security Advisory System

On March 11, 2002, President Bush unveiled the Homeland Security Advisory System (HSAS) as a tool to improve coordination and communication among all levels of government, the private sector, and the American public in the fight against terrorism. The Advisory System identifies the Threat Condition and also outlines protective measures that can be taken by its partners.

The federal government, states, and the private sector each have a set of plans and protective measures that are implemented as the Threat Condition is raised or lowered, thus reducing U.S. vulnerability to attack.