The TARC competition is today. For those who want to follow the event on twitter, you might want to try the hashtag #TARC11. At the moment it looks like some people are starting to show up a bit early.
Also, here is the twitter account for the organizers:
@RocketContest. The Plains, Va. The Aerospace Industries Association's Team America Rocketry Challenge is the world's largest rocket contest for middle & high school teams!