01680oam 2200481 a 450 991070076910332120110712092950.0(CKB)5470000002411314(OCoLC)654583388(EXLCZ)99547000000241131420100810d2010 ua 0engurmn||||a||||txtrdacontentcrdamediacrrdacarrierHomeland Security[electronic resource] US-VISIT pilot evaluations offer limited understanding of air exit options : report to congressional committees[Washington, D.C.] :U.S. Govt. Accountability Office,[2010]1 online resource (i, 78 pages) illustrationsTitle from PDF title screen (GAO, viewed Aug. 10, 2010)."August 2010.""GAO-10-860."Includes bibliographical references.Homeland Security Visitors, ForeignGovernment policyUnited StatesVisitors, ForeignUnited StatesIdentificationBiometric identificationUnited StatesPorts of entrySecurity measuresUnited StatesNational securityUnited StatesVisitors, ForeignGovernment policyVisitors, ForeignIdentification.Biometric identificationPorts of entrySecurity measuresNational securityDIDDIDDIDOCLCQGPOBOOK9910700769103321Homeland Security1686681UNINA