My in-laws were at their only pro-football game that day - in Washington, D.C. - Redskins vs Eagles. My MIL would talk about it. She said that during half time they used the PA system to call out various Generals and Admirals and other officials. No one seemed to care about that - it was Washington, after all. Then, during every break in play they called out more. They didn't announce it until the end so there wouldn't be panic. Redskins won, BTW. wow.