"We did not do frankly a very good job of communicating initially that there would be an exemption, if you will, from the thorough pat-down for children 12 and under. That was under review when the policy came out, and so we have clarified that. It does not apply to children 12 and under."
http://www.npr.org/blogs/thetwo-way/2010/1...

"We have to screen everyone, regardless of age (even babies), before they can go through the security checkpoint." http://www.tsa.gov/travelers/airtravel/chi...
What happens if the child fails or pitches a fit during the screening? Does he/she then have to go through the thorough pat-down?

The whole thing is too confusing.