Advanced Tactical Fighter 
Amphibious Task Force 
Automatic Transmission Fluid 
Advanced Technology Fighter 
Alcohol, Tobacco and Firearms 
Advanced Toroidal Facility 
Automatic Track Finding 
acceptance test facility 
activating transcription factor 
Advanced Tactical Fiber 
Advanced Targeting FLIR 
Alcoholism Treatment Facility 
All Time Favorite 
Astrometric Telescope Facility 
Australian Task Force 
Automation Task Force 
Autonomous Thruster Facilities 
Fleet Ocean Tug 
abdominal total fat 
Academy of Textiles and Flooring 
Accelerator Test Facility 
Acceptance Test Firing 
Accessibility Task Force 
Accredited Testing Facility 
Acid-Treated Florisil 
acoustic transfer function 
activated transcription factor 
Activation transcription factor 
Active Transfer Case 
Activity Test Failure