Cable news is reporting that a boat on the Potomac has been fired at by the Coast Guard, though details appear to be close to nonexistent. Certainly has rattled nerves of Beltwayers, especially given the date.

UPDATE: Oh dear. CNN has “two police sources” saying it was a “possible Coast Guard training exercise.” Yes, during the morning of September 11th.

ANOTHER UPDATE: It was a training exercise. How colossally idiotic.