FILE - In this March 15, 2010 file photo, a sign next to a body scanner describes what Transportation Security Administration officers see on their computer screens as volunteers go through the first full body X-rayscanner installed at O'Hare International Airport in Chicago. The Transportation Security Administration has been replacing the huge X-ray machines with smaller, millimeter wave body scanners at seven major U.S. airports. The new technology produces a cartoon-like outline rather than naked images of passengers produced by using X-rays. (AP Photo/M. Spencer Green, File)
