STRI - syst
- surveillance, acquisition, tracking and kill assessment (program)
- surveillance, patrol, reconnaissance, intelligence gathering, target designation and EW (vehicle)
- surveillance, target acquisition and night observation systems manager
- surveillance, target acquisition, and night observation (equipment)
- surveillance, target acquisition, and reporting system
- surveillance, targeting and acquisition
- surveillance, threat assessment report
- survey
- survey and investigation
- survey and investigation staff
- survey battery
- survey company
- survey control point
- survey data processing
- survey electronic distance measuring equipment, infrared
- survey information center
- survey instrument azimuth gyro, light-weight
- survey officer
- survey operations
- survivability and security of theater nuclear forces
