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