1991 2001- 2003-2011 accesscontrol aeronautics afghanwar aircraftleasingandrenting airlift airpilots airplanes airrefueling classifieddefenseinformation coldwar costeffectiveness costs defensecontracts designandconstruction equipment equipmentandsupplies evaluation governmentalinvestigations history iraqwar jettransports kc-10(tankeraircraft) kc-135(tankeraircraft) lettingofcontracts maintenanceandrepair military militaryairplanes officers operationalreadiness operationalreadiness(militaryscience) persiangulfwar procurement purchasing transportation unitedstates