While these machines may stop terrorists from entering an airplane, it won't stop them from blowing up the crowded lines waiting to be scanned. Then install the machines at the entrance? The terrorists just have to move further outside. Any place with crowds of people is a threat. Nowhere is safe!

We should resurrect Ben Franklin's old adage: "They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."

Remember that the machines don't see inside body cavities. So if you, dear backscatter supporter, want to feel better (but not actually be safer), you should be arguing for complete cavity searches everywhere.