Air Tasking Order Australian Taxation Office Agency Tender Official Air Traffic Organization Afloat Training Organization Air Tasking Orders Airborne Tactical Officer Abort To Orbit Air Transportation Office Abort-to-Orbit Advanced Technology Office African Timber Organization Agricultural Trade Office air traffic operations Air Transfer Office Aircraft Transfer Order Alpha Tau Omega Approved Training Organisation Army Technology Objective Asset Turnover Atmosphere Ocean Australian Tax Office Automatic Train Operation Abbreviated Technical Order Aborted Take Off Accumulated Time Off Advanced Technology Offering Agro Technologisch Onderzoek Air Target Officer Air Task Order