Terrorism

"Backscatter" X-Ray Screening Technology

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Stand by, air travelers, because the U.S. Homeland Security Department is preparing to install and test high-tech machines at airport checkpoints that will ''See Thru Clothing!''

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Airline passengers wait in line for security screening at Denver International Airport in Denver in this Aug. 13, 2006 file photo. For the last four years without public notice, federal agents have assigned millions of Americans and other travelers computer-generated scores assessing the risk they pose of being terrorists or criminals. (AP Photo/Jack Dempsey, File)