CNN: Coast Guard fired on "suspicious vessel" in Potomac River (UPDATE: It was "training exercise")

UPDATE @ 10:33 a.m.: CNN now reporting this was a Coast Guard training exercise. Seriously? On September 11th? When the President was at the Pentagon?

NOTE FROM JOHN: Idiots.
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Watching CNN now. They are reporting that the Coast Guard has fired shots at a "suspicious vessel" in the Potomac River. It looks like they're between the Memorial Bridge and the 14th Street Bridge. It's is September 11th and there was a memorial event at the Pentagon, with President Obama, so that part of the river was restricted.