Do you trust the government to use just the right amount of radiation to determine whether an 80-year-old grandma is a suicide bomber? I don't. If the guys in the TSA are not smart enough to know 80-year-old grandmas don't blow up planes, I don't trust them to tie their own shoes.
http://blog.nj.com/njv_paul_mulshine/2010/11/more_un_gropergate_mutagenic_e.html