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The threat level in the airline sector is High or Orange. Read more.
May 11, 2009
The Homeland Security Advisory System is designed to guide our protective measures when specific information to a particular sector or geographic region is received. It combines threat information with vulnerability assessments and provides communications to public safety officials and the public.
This system was established in Homeland Security Presidential Directive 3.
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This page was last reviewed/modified on May 11, 2009.