WASHINGTON (CNN) -- Al Qaeda may be planning "spectacular attacks" in the United States that will cause "mass casualties" and "severe damage" to the economy, according to a federal law enforcement bulletin.

Even so, the warnings have not caused the Homeland Security threat level to be increased from yellow, or elevated risk, and FBI officials said there is no new intelligence that led to the strong wording of the bulletin.

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Which rather begs the question, what sort of attack will it take to ramp us up to red alert, then?


Is anyone else wondering...if they give enough warnings, sooner or later one of the warnings may actually coincide with an actual attack? Or would that be a statistical impossibility?