Don't know the answer to the question, but I did see Tom Ridge going through the terminal on 8/28 as my crew and I were arriving a little after one pm. He had about a dozen secret service agents with him, who didn't do anything to make him inconspicuous. That's how I and my crew noticed him. Otherwise, He would've been just another suit to me. Anyways, this was also in the USAirways Pier at DCA. Might be what you saw.
Aceshigh