While going through the security lines at the airport yesterday, Dillon did a little skip through the security thing. The TSA agent made a big deal of this, squating down with his arms outstretched to corral her all while saying "I can't touch you, but you have to go back through!!"
Then, Corryn and I were going though. I didn't take her soft leather shoes off, so the same agent made me go back, take off her shoes and come back through the security screener thing.
So, apparently, happy, skipping 4 year old and infants with soft leather shoes on are now on the list of high risk fliers.