Service Module 
Session Management 
Subnet Manager 
System Manager 
Standard Missile 
statute mile 
Strategic Missile 
Surface Mounted 
Switching Module 
System Management 
Systems Management 
San Marino 
secondary mirror 
servicing mission 
Set Mode 
Shuttle Management 
Single Mode 
standard model 
Surface Mount 
Switching Modual 
Science Mission 
Section Manager 
Security Module 
Service Management 
service mark 
short module 
soft manual 
Software Management 
Soldiers Manual 
Sparse Mode