The military acronym means "Absent With Out Leave". This is sometimes differentiated as AOL (Absent Over Leave) when the intent of the violation is unclear.
Surface-to-Air Missile. It's an anti-aircraft missile used by ground troops.
In military terms, UTC can mean three things: 1. Unified Transportation Command2. Unit Type Code3. Coordinated Universal Time
General Issue
G.I. stands for Government Issue.