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