STRI - syst
- surface-to-air recovery
- surface-to-air recovery system
- surface-to-air-antimissile
- surface-to-ship missile
- surface-to-surface
- surface-to-surface guided weapon
- surface-to-surface missile
- surface-to-surface missile system
- surface-to-surface mission
- surface-to-surface warfare
- surface-to-target-to-missile
- surface-to-target-to-surface-to-missile
- surface-to-underwater missile
- surface-wave radar
- surface/air systems integration
- SURGEN
- surgeon
- Surgeon General
- Surgeon General's Office
- Surgeon-in-Chief
- surgical countermeasures
- SURPIC
- surplus personal property
- Surplus Property Board
- surprise security inspection
- surrendered enemy personnel
- SURS
- SURTRANS
- SURVARA
- SURVBTY
- surveillance and control data link
- surveillance and detection system
- surveillance and display interface system
- surveillance and identification
- surveillance and inspection
- surveillance and maintenance
- surveillance and precision approach radar
- surveillance and target acquisition
- surveillance and target acquisition aircraft system
- surveillance and target acquisition radar for tank location and engagement
