The US Transportation Security Administration (TSA) has deployed about 640 Advanced Imaging Technology (AIT) body-scanning machines to 165 airports, but the expensive equipment is not always deployed cost-effectively, according the US Government Accountability Office (GAO). In testimony before the House of Representatives last month, GAO director-homeland security and justice issues Stephen Lord said that a number of AIT machines observed by GAO at 12 airports from March 2010 through ...

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