American Council on Education 
Aviation Combat Element 
Advanced Composition Explorer 
Arctic Cloud Experiment 
Allied Command Europe 
Analysis and Control Element 
Air Combat Element 
access control entry 
Acquisition Center of Excellence 
Automatic Calling Equipment 
Advanced Computing Environment 
Angiotensin-converting enzyme 
Acceptance Checkout Equipment 
Active Cornering Enhancement 
Analysis Control Element 
Automated Commercial Environment 
Automatic Calibration and Equalization 
Armored Combat Earthmover 
Armored Combat Earth-mover 
Advancement in Clinical Excellence 
Advisory Committee on the Environment 
angiotensin converting enzyme 
Army Corps of Engineers 
Attitude Control Electronics 
Actuator Control Electronics 
Adobe Community Experts 
Advisory Centre for Education 
Aerosol Characterization Experiment 
Airborne Command Element 
American Council of Education