operational and functional operational and legal operational and management operational and strategic operational and tactical operational and technical operational applications operational approach operational area operational areas operational arrangements operational art operational aspect operational aspects operational assessment operational assistance operational authority operational availability operational base operational benefits operational budget operational business operational capabilities operational capability operational capacities operational capacity operational center operational centre operational centres operational challenges operational change operational changes operational characteristics operational command operational commander operational commands operational communication operational communications operational complexity operational component operational components operational concept operational concepts operational conclusions operational condition operational conditions operational considerations operational constraints operational context operational continuity operational control operational controls operational cooperation operational coordination operational cost operational costs operational criteria operational data operational database operational decision operational decisions operational definition operational definitions operational demands operational department operational departments operational deployment operational details operational difficulties operational directives operational director operational duties operational effectiveness operational efficiencies operational efficiency operational elements operational energy operational entities operational entity operational environment operational environmental operational environments operational errors operational evaluation operational excellence operational expenditure operational expenditures operational experience operational expertise operational failure operational faults operational features operational flexibility operational flight operational flow operational focus operational forces operational framework operational functions