From Bill's blog:

This was a wild show!!!!! That darn balloon story took up a lot of time and energy. Mr. Delcourt's class had a pretty good project and I wanted to cover it. Just like the early space program, they spent an awful lot of energy getting everything to go up when finding the thing when it came down would have made things a little bit easier! Still, what a fun project! As a guy who stands outside to watch the Space Station fly over, I can't tell you how thrilling this was. Next year, I want to be part of the chase team!

http://www.youtube.com/watch?v=I13USa0kFbI&feature=relmfu