01594oam 2200421 a 450 991069907700332120090811144656.0(CKB)5470000002399113(OCoLC)352875001(EXLCZ)99547000000239911320090527d2009 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierFreight rail security[electronic resource] actions have been taken to enhance security, but the federal strategy can be strengthened and security efforts better monitored : report to Congressional requesters /United States Government Accountability Office[Washington, D.C.] :U.S. Govt. Accountability Office,[2009]1 online resource (iii, 123 pages) illustrationsTitle from title screen (GAO, viewed May 27, 2009)."April 2009.""GAO-09-243."Includes bibliographical references.Freight rail security RailroadsSecurity measuresUnited StatesTerrorismUnited StatesPreventionHazardous substancesTransportationSecurity measuresUnited StatesRailroadsSecurity measuresTerrorismPrevention.Hazardous substancesTransportationSecurity measuresDIDDIDJCRGPOBOOK9910699077003321Freight rail security3452480UNINA