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![]() Date: 2011-05-02 10:16:58Measuring instruments Anwar al-Awlaki Crime prevention Transportation Security Administration Full body scanner Airport security Northwest Airlines Flight 253 No Fly List Backscatter X-ray Security United States Department of Homeland Security Aviation security | Source URL: www.rand.org.cnDownload Document from Source WebsiteFile Size: 172,97 KBShare Document on Facebook |