National threat level raised to high.
The Department of Homeland Security has just raised the national threat level of foreign terrorist attack from elevated to high, orange. (*)
The DHS has an explanation of the levels. (†)
Update: Tom Ridge said that the level is not raised only because of the holiday season. It was also raised because of the greatest danger of a major attack since 9/11. He specifically warned of “aircraft as a weapon.” (‡)