In this photo taken Sept. 1, 2010, Transportation Security Administration employee Anthony Brock, left, demonstrates a new full-body scanner at San Diego's Lindbergh Field, with TSA employee Andres Lozano in San Diego.  (AP Photo/San Diego Union Tribune, Eduardo Contreras)

Photo by: Eduardo Contreras

In this photo taken Sept. 1, 2010, Transportation Security Administration employee Anthony Brock, left, demonstrates a new full-body scanner at San Diego's Lindbergh Field, with TSA employee Andres Lozano in San Diego. (AP Photo/San Diego Union Tribune, Eduardo Contreras)