01558nam 2200397 a 450 991069938760332120230902161730.0(CKB)5470000002402036(OCoLC)497040437(EXLCZ)99547000000240203620100112d2009 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierTransportation security[electronic resource] key actions have been taken to enhance mass transit and passenger rail security, but opportunities exist to strengthen federal strategy and programs : report to the Chairman, Committee on Homeland Security, House of Representatives[Washington, D.C.] :U.S. Govt. Accountability Office,[2009]1 online resource (iv, 93 pages) illustrations, mapTitle from PDF title screen (GAO, viewed Jan. 7, 2010)."June 2009.""GAO-09-678."Includes bibliographical references.Transportation security TransportationSecurity measuresUnited StatesPassenger trainsSecurity measuresUnited StatesTransportation and stateUnited StatesTransportationSecurity measuresPassenger trainsSecurity measuresTransportation and stateGPOGPOBOOK9910699387603321Transportation security3454925UNINA