A Coureware Engineering System 
Accelerated College Enrollment Scholar… 
Acceptance Checkout and Evaluation Sys… 
Acceptance Control Equipment Section 
Acceptance Control Equipment System 
Access Certificates for Electronic Ser… 
Access Certificates for Electronics Se… 
Access Certifications for Electronic S… 
Access control enrollment station 
Access Control Entries 
Access Control Equipment System 
Access Control/Entry System 
ACE score 
ACES Colombia 
Acoustic Containerless Experiment Syst… 
Active Community Environments Initiati… 
Active Control Evaluation for Spacecra… 
Activities for the Changing Earth Syst… 
Ada Compiler Evaluation Suite 
Ada Compiler Evaluation System 
Ada Compiler Evalutation System 
Adaptation Controlled Environment Syst… 
Advance Computerized Execution System 
Advanced Catalytic Enzyme System 
Advanced Computerised Execution Servic… 
Advanced Concept Ejection Seat 
Advanced Crew Escape Spacesuit 
Advanced Crew Escape Suit 
adverse cardiac events 
Adverse childhood experiences