American Automobile Association 
Abdominal Aortic Aneurysm 
Army Audit Agency 
American Arbitration Association 
Anti Aircraft Artillery 
Agricultural Adjustment Administration 
American Accounting Association 
abdominal aortic aneurysms 
Alternate Assembly Area 
American Anthropological Association 
Authentication Authorization, Accounti… 
Avionics Air Assembly 
MISCELLANEOUS 
Adaptive Anti-Aliasing 
Affirmative Action Agency 
Agricultural Adjustment Act 
Air Avenue of Approach 
Allocations Assessment and Analysis 
Amateur Astronomers Association 
American Academy of Audiology 
Analytical and Advisory Activities 
Anti-Aircraft Artillery 
Appraisers Association of America 
Area Agencies on Aging 
Area Agency on Aging 
Army Ammunition Activity 
aromatic amino acid 
Arrival and Assembly Area 
Assign Alternate Area 
Assistant Associate Administrator