| SIGINT | Signals Intelligence |
| SLAM-ER | Standoff Land |
| SLBM | Sea-Launched Ballistic Missiles |
| SLOC | Sea Lines of Communication |
| SLV | Space Launch Vehicle |
| SMA | Special Mission Aircraft |
| SOE | State-Owned Enterprise |
| SOF | Special Operations Forces |
| SRBM | Short-Range Ballistic Missile |
| SRSS | Sudan Remote-Sensing Satellite |
| SS | Diesel-Powered Attack Submarine |
| SSBN | Nuclear-Powered Ballistic Missile Submarine |
| SSD | Space System Department |
| SSF | Strategic Support Force |
| SSGN | Guided-Missile Nuclear-Powered Attack Submarine |
| SSN | Nuclear-Powered Attack Submarine |
| SSP | Air-Independent Powered Attack Submarines |
| SSS | Student Small Satellites |
| STEM | Science, Technology, Engineering, And Mathematics |
| TEL | Transporter, Erector, Launcher |
| TRA | Taiwan Relations Act |
| TT&C | Telemetry, Tracking, And Control |
| TTP | Tactics, Techniques, And Procedures |
| UAE | United Arab Emirates |
| UAS | Uncrewed Aerial Systems |
| UAV | Uncrewed Aerial Vehicles |
| UCAV | Uncrewed Combat Aerial Vehicle |
| UFWD | United Front Work Department |
| UN | United Nations |
| UNCLOS | United Nations Convention on The Law of The Sea |
| USD | U.S. Dollar |
| USNS | United States Naval Ship (Non-Commissioned) |
| USTR | United States Trade Representative |
| VBSS | Visit, Board, Search and Seizure |
| VIP | Very Important Person |
| VLS | Vertical Launch System |
| VRSS | Venezuelan Remote-Sensing Satellite |
| VTC | Video Teleconference |
| VTOL | Vertical Take-Off and Landing |
| XPCC | Xinjiang Production and Construction Corps |
| XSCC | Xi'an Satellite Control Center |
192
OFFICE OF THE SECRETARY OF DEFENSE
Annual Report to Congress: Military and Security Developments Involving the People's Republic of China
