01698nam 2200409 450 991070435080332120130130072352.0(CKB)5470000002440177(OCoLC)825996101(EXLCZ)99547000000244017720130130d2012 ua 0engurmn|||||||||rdacontentrdamediardacarrierCritical infrastructure protection summary of DHS actions to better manage Its chemical security program : testimony before the Subcommittee on Homeland Security, Committee on Appropriations, House of Representatives /statement of Stephen L. Caldwell[Washington, D.C.] :United States Government Accountability Office,2012.1 online resource (11 pages) color illustrationsTestimony ;GAO-12-1044TTitle from title screen (viewed Jan. 17, 2013)."For release ... September 20, 2012."Includes bibliographical references.Critical infrastructure protection Hazardous substancesSecurity measuresUnited StatesTerrorismUnited StatesPreventionHazardous substancesSecurity measuresTerrorismPrevention.Caldwell Stephen L.1381588United States.Congress.House.Committee on Appropriations.Subcommittee on Homeland Security,United States.Government Accountability Office,GPOGPOBOOK9910704350803321Critical infrastructure protection3470502UNINA