A-FIST
A-FIST stands for Abrams Full Crew Interactive Skills Trainer
A-File
A-File stands for Administrative File
A-G
A-G stands for Air-to-Ground
A-Gang
A-Gang stands for Auxiliary Division (US Navy)
A-GNSS
A-GNSS stands for Assisted Global Navigation Satellite System (also seen as AGNSS)
A-HOUR
A-HOUR stands for Alert Hour
A-INF
A-INF stands for Army Infantry Board (Fort Benning, Georgia)
A-J
A-J stands for Anti-Jam
A-LCMR
A-LCMR stands for Advanced Lightweight Counter Mortar Radar (US Army)
A-LINKS
A-LINKS stands for Digital/FM Satellite Links Between NATO SATCOM Ground Terminals