Advanced Technology Advisory Committee 
Advanced Technology Assessment Center 
Agricultural Technical Advisory Commit… 
Air Transport Association of Canada 
Army Tank-Automotive Command 
Australian Transport Advisory Council 
Acquisition Transformation Action Coun… 
Adaptive Transform Acoustic Coding 
Adaptive Transformation Audio Coding 
ADIC Technical Assistance Center 
Advanced Tactical 
Advanced Tactical Air Command 
Advanced Team Attack Control 
Advanced Technical Assistance Center 
Advanced Traceability and Control 
Advisory Technical Awareness Council 
Aegis Tactical Assessment Capability 
Aerospace Technology Advisory Committe… 
Aftermarket Technology Corp. 
Air Tasking Authority Commander 
Air Transport Advisory Council 
Air Transportation Acoustic Communicat… 
Air-to-Air Combat 
antiterrorism alert center 
Arimidex and tamoxifen alone or in com… 
Arimidex, tamoxifen and combination th… 
Arimidex, Tamoxifen, Alone or in Combi… 
Army Tank and Automotive Command 
Army Tank Automotive Center 
Army Travelers Assistance Center