Hey, remember those "backscatter" x-ray machines that <a href="http://www.wired.com/threatlevel/2011/03/scanners-part3/">can't find a bomb if a terrorist shoves it up his butt and can't find guns if placed a certain way</a> and are considered "safe" -- <a href="http://www.propublica.org/documents/item/april-2011-letter-to-john-holdren">even though they refuse to let scientists verify the results of the studies proving it</a> -- which makes travelers choose between risking potential exposure to radiation or getting molested by a TSA agent.