S
- SAASS - School of Advanced Air and Space Studies
- SAC - Strategic Air Command
- SAF/SECAF - Secretary of the Air Force
- SAM - Surface to Air Missile
- SARC - Sexual Assault Response Coordinator
- SATCOM - Satellite Communications
- SAV - Staff Assisted Visit
- SBIRS - Space-Based Infrared System
- SEAD - Suppression of Enemy Air Defenses
- SEADS - Southeast Air Defense Sector
- Secret squirrel stuff - Material classified above secret or compartmentalzed information.
- SEPCOR - Separate Correspondence
- SERE - Survival, Evasion, Resistance and Escape
- SF - Security Forces
- SFS - Security Forces Squadron
- Shirt - A unit first sergeant
- SIGINT - Signals Intelligence
- SIPR - Secret Internet Protocol Router Network
- SKT - Specialty Knowledge Test
- Slick Sleeve - Nickname for an Airman Basic (owing to the absence of rank insignia on an individual's sleeve)
- SMSgt - Senior Master Sergeant
- SNCO - Senior Non-commissioned Officer
- SNCOA - Senior Non-commissioned Officer Academy
- Snacko - A highly underestimated, mission critical position held most often by Lieutenants in a new flying squadron. Doing well at the Snacko position will prompt one for a laudable career. Failing at such a job will often entail severe ridicule and, if necessary, replacement and retraining by the flying squadron.
- SOP - Standard Operating Procedure
- SOPS - Space Operations Squadron
- SOS - Squadron Officer School or Special Operations Squadron
- SOW - Special Operations Wing
- Spirit Mission - A good natured act, commonly in the form of a prank, banner, or...reacquisition...of a person/thing, to show pride for a group of individuals. Usually harmless.
- Sq - Squadron
- SrA - Senior Airman
- SRC - Solid Rock Cafe (new as of 2011, found @ Sheppard AFB, Wichita Falls TX - unofficial anogram that is used by officers as well as students)
- SSgt - Staff Sergeant
- STEP - Stripe Through Exceptional Performance
- Strike Eagle - Nickname for F15 E
- Stink Bug - Nickname for the F-117 Nighthawk
- STS - Special Tactics Squadron
- SVS - Services Squadron
- SW - Space Wing
- SWA - Southwest Asia
- SWAG - Scientific Wild-Ass Guess
Read more about this topic: List Of U.S. Air Force Acronyms And Expressions