Navy SEAL. SOFA – Status of Forces Agreement SONAR – Sound Navigation And Ranging SOP(A) – Senior Officer Present (Ashore) SOPA – Senior Officer Present Afloat SOQ – Sailor of the Quarter SOY – Sailor of the Year SPAWAR – Space and Naval Warfare Systems Command SPAWARSYSCEN – Space and Naval Warfare Systems Center SR – Seaman Recruit SRB – Selective Reenlistment Bonus SRW – Shutdown Roving Watch SS – Submarine Specialist SS – Submarine, class/type of ship SSBN (aka Boomers) – Hull classification symbol for ballistic missile submarine (Submersible Ship Ballistic Nuclear) SSES – Ships Signals Exploitation Space: compartment on a ship where embarked NAVSECGRU personnel, known a Cryptologic Technicians, do their work SSGN – Hull classification symbol for cruise missile submarine (Submersible Ship Guided Missile Nuclear) SSMG – Ships Service Motor Generator; engine room equipment used to convert electrical current from AC to DC or DC to AC SSN – Hull classification symbol for general-purpose fast attack submarines (Submersible Ship Nuclear) SSOQ – Senior Sailor of the Quarter SSOY – Senior Sailor of the Year SSTG – Ships Service Turbo Generator STG – Sonar Technician Surface STREAM – Standard Tension Replenishment Alongside Method STS – Sonar Technician Submarines SUBRON – Submarine Squadron SUBSAFE – Submarine Safety Program SUPPO – Supply Officer SWCC (swick) – Special Warfare Combatant-craft Crewmen, the Special Operations Forces who operate and maintain an inventory of boats used to conduct special operations missions or to support special operations missions conducted in maritime environments, particularly those of the U.S. Navy SEALs. SWO – Surface Warfare Officer T TAD – Temporary Additional Duty, equivalent to Army's TDY TADCEN – Training and Distribution Center TAO – Tactical action officer (fights the ship under the supervision of the captain) TAR – Training and Administration of the Reserve (U.S. Navy Reserve, former designation for FTS personnel) TE – Task element TF – Task force TFO – Temporary flight orders. Non-aircrew personnel that have passed the minimum requirements to act as part of the aircrew for some purpose, e.g. secondary door gunner. TFOA – Things falling off aircraft TG – Task group TLD – Temporary limited duty TM – Torpedoman's mate TOPGUN – United States Navy Fighter Weapons School TSP – Troubled systems process TU – Task unit TYCOM – Type commanders U UA – Unauthorized Absence, equivalent to Army's absent without leave (AWOL) UA – Urinalysis UAS – Unmanned Aerial