Scientific Steering Group 
Service Selection Gateway 
Small Signal Gain 
Special Study Group 
Standard Systems Group 
Standing Scientific Groups 
Guided Missile Submarine 
Sensor Systems Group 
Servicing Scenario Generator 
sodium starch glycolate 
Space Systems Group 
Staff Sergeant 
Standard Specific Gravity 
Standards Systems Group 
Strategic Studies Group 
Symbolic Stream Generator 
Cruise Missile Attack Submarine 
Safety Strategy Group 
sanguis group 
Scandinavian Sarcoma Group 
School Standards Grant 
Science Steering Group 
Scientific Staffs Group 
Search Signal Generator 
Second Stage Graphitization 
Secure Services Gateway 
Security and Service Group 
Security Services Group 
Self-Study Guide 
Semiconductor Strain Gauge