01816nam 2200421 a 450 991069589780332120070502160330.0(CKB)5470000002372808(OCoLC)123916413(EXLCZ)99547000000237280820070502d2007 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierAviation security[electronic resource] progress made in systematic planning to guide key investment decisions, but more work remains : testimony before the Subcommittee on Homeland Security, Committee on Appropriations, House of Representatives /statement of Cathleen A. Berrick[Washington, D.C.] :U.S. Govt. Accountability Office,[2007]58 pages digital, PDF fileTestimony ;GAO-07-448 TTitle from title screen (viewed on Apr. 18, 2007)."For release ... February 13, 2007."Paper version available from: U.S. Govt. Accountability Office, 441 G St., NW, Rm. LM, Washington, D.C. 20548.Includes bibliographical references.Aviation security Aeronautics, CommercialSecurity measuresUnited StatesAirportsSecurity measuresUnited StatesAeronautics, CommercialSecurity measuresAirportsSecurity measuresBerrick Cathleen A1381679United States.Congress.House.Committee on Appropriations.Subcommittee on Homeland Security.United States.Government Accountability Office.GPOGPOBOOK9910695897803321Aviation security3424509UNINA