Fireworks in Washington D.C.

We could meet up after the parade and head over to the area where they are presenting the musical concert. John Williams himself will be conducting his own patriotic music among other items. I figured we could bring card games, and have a picnic. Please sign up for a pot-luck style event. Any suggestions for a meeting location would be great. I'll be making a sign for the event so people know who we are... :)
Hope to see you there!