01622oam 2200397 a 450 991070052980332120110620154242.0(CKB)5470000002410701(OCoLC)713557735(EXLCZ)99547000000241070120110214d2010 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierGlobal Positioning System[electronic resource] challenges in sustaining and upgrading capabilities persist : report to the Subcommittee on National Security and Foreign Affairs, Committee on Oversight and Government Reform, House of Representatives[Washington, D.C.] :U.S. Govt. Accountability Office,[2010]1 online resource (iii, 62 pages) illustrationsTitle from PDF title screen (GAO, viewed June 16, 2011)."September 2010.""GAO-10-636."Includes bibliographical references.Global Positioning System Global Positioning SystemArtificial satellites in navigationGovernment policyUnited StatesGlobal Positioning System.Artificial satellites in navigationGovernment policyUnited States.Congress.House.Committee on Oversight and Government Reform.Subcommittee on National Security and Foreign Affairs.DTICEDTICEGPOBOOK9910700529803321Global positioning system55700UNINA