With the President just pulling away from today's 9/11 memorial at the Pentagon, CNN broadcast a report that the Coast Guard had fired ten times at a boat in the Potomac River. The cable network also showed pictures of Coast Guard boats speeding around in the water. A few moments later, CNN and others reported that no shots were fired. What they heard was a routine training exercise of a sort conducted every day. Cam Simpson is Washington Correspondent for the Wall Street Journal.