Homeland Security Presidential Directive 3

Homeland Security Presidential Directive 3 (HSPD-3) &mdash; Homeland Security Advisory System (March 2002) &mdash; established the policy for the creation of the Homeland Security Advisory System (HSAS) to provide warnings to Federal, State, and local authorities, and the American people in the form of a set of graduated threat conditions that escalate as the risk of the threat increases. At each threat level, Federal departments and agencies are required to implement a corresponding set of protective measures to further reduce vulnerability or increase response capabilities during a period of heightened alert. The threat conditions also serve as guideposts for the implementation of tailored protective measures by State, local, tribal, and private sector partners.