1) Военный термин: Southwest Asia Telecommunications System, Standard Army Training System, short airfield for tactical support, simulated airborne transponder system, small airfield for tactical support, small-arms target system, small-arms training system, special assistance teams
3) Биржевой термин: Small Aircraft Transportation System
4) Сокращение: Short / Small Airfield for Tactical Support, Small Arms Target System, Small Arms Training Strategy
5) Космонавтика: Solar Alignment Test Site
6) Международная торговля: South American Trade Services
Универсальный англо-русский словарь. Академик.ру. 2011.