A quick update with a few items of interest:
The Greyhound bus driver who kicked the occupy protesters off the bus in Amarillo (the Amarillo 13) has been fired by Greyhound, this is not verified, it's spreading throughout the festivities in D.C.
There is a report about smoke 'bombs' floating around various news sites that is greatly exaggerated, according to witnesses via livestream.
Right now there's a lot of music, singing, conversation, with a general festive atmosphere. Known on Twitter, as @LauraLoveMusic, she sang a beautiful rendition of "America the Beautiful."