Interestingly enough, there was nothing in the news, or did I miss it? There was an AD at the Saxet Gun Show Saturday morning. No one was hurt. I was checking out some milsurp rifles about 50yds away when I heard it. There were plenty of uniformed LEOs in the place to check it out, apparently, they were looking for good deals, too.
From what I understand from conversations of other patrons and sellers, there was a dealer that had apparently neglected to empty the chamber of one of his .45's and somebody dropped the hammer on it. It ricochetted off the floor a wall and into the ceiling. The dealer was promptly escorted out of the facility and banned from selling there again. Again, this is the product of the rumor mill, after the shot went off.
I guess even the most experienced gun afficianado can overlook a simple safety procedure.