WASHINGTON -- A senior U.S. official says the Obama administration will announce Tuesday that it will review the nation's multicolored terror alert system that was created after the Sept. 11, 2001, attacks.
Homeland Security Secretary Janet Napolitano is expected to appoint a panel to reevaluate the system and determine whether it should be changed, or possibly eliminated.
The five-tiered system that goes from green, which signals a low danger of attack, to red, which signals a severe threat of attack, has proven to be confusing at times. Critics say the different colors are too vague to deliver enough information to be useful.
The official spoke on condition of anonymity because the announcement has not yet been made public.
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