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    Transportation Security: Key Actions Have Been Taken to Enhance Mass Transit and Passenger Rail Security, but Opportunities Exist to Strengthen Federal Strategy and Programs

    NTIS | 2009
    Schlagwörter: Transportation , Metropolitan Rail Transportation , Railroad Transportation , Transportation security , Security strategy , Transportation Security Administration (TSA)

    Aviation Security: Federal Air Marshal Service Could Benefit from Improved Planning and Controls

    NTIS | 2005
    Schlagwörter: Air Transportation , Transportation Safety , Aviation security , Aircraft safety , Air transportation , TSA(Transportation Security Administration)