What would George Washington have thought?  Where was the Secret Service?  President Obama joined a young Arizona boy in launching marshmallows across the state dining room of the White House.  I can hear America's mothers saying collectively, "What do you think this is Animal House?" 

"Joey," an 8th grader from Phoenix, was one of several students who showed off projects at the White House Science Fair.  The President and Joey teamed up to try out his air cannon!  (Look at this thing, Joey will likely be working for NASA someday!)