CNN reported that the US Coast Guard had fired shots at a passenger vessel on the Potomac River a short distance from where 9/11 memorial events were taking place at the Pentagon.   Later reports say that the incident was in fact a training exercise and claims that no shots were fired.

We are awaiting confirmation that the exercise was scheduled by the Coast Guard’s Department of Really Lousy Timing and Stupid Stunts.

Coast Guard training exercise on Potomac raises security scare