Strap Around Unit 
search attack unit 
Signal Acquisition Unit 
Same As Usual 
SAUDI ARABIA 
Search and Attack Unit 
Signaling Access Unit 
Safety Arming Unit 
Saint Ambrose University 
School Administration Unit 
School Administrative Unit 
Secure Access Unit 
Separate Administrative Unit 
SIGNAL ANALYZER UNIT 
Smallest Addressable Unit 
Southern Adventist University 
Southern Arkansas University 
Southwestern Adventist University 
Spectrum Analysis Unit 
Spring Arbor University 
Squadron Augment Units 
St. Andrew's University 
Standard Advertising Unit 
Staphylococcus aureus 
State Agricultural University 
Stern Adaptor Unit 
Surface Attack Unit 
System Availability Unit 
United Aviation Services 
Strap-Around Unit