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