PS Personnel screening and selection procedures Psychwar Psychological warfare Pub. ed. Public education (to counter misperceptions and deliberate misinformation) R&D Research and development Red. obs. Reduced observables RF Radio frequency RFI Radio frequency interference RIO (International) Resident Inspection Organization ROE Rules of engagement RV Reentry vehicles 3 S Shelter, supplies, and services S&R Surveillance and reconnaissance SAC U.S. Air Force Strategic Air Command SALT Strategic Arms Limitation Treaty SAM Surface-to-air missile SATMUT Damage or mutilation of a satellite by grapplers SATNAP Seizure ("kidnapping") of a satellite SD Self-destruction SDF Self-defense SGEMP System-generated electromagnetic pulse SIGINT Electronic intelligence, generically (See also COMINT and ELINT.) SMAT Sabotage, mutiny, attack, and/or terrorism SMF Space manufacturing facility SOLARES Space Orbiting Light Augmentation Reflector Energy System SPS Satellite Power System SSME Space Shuttle Main Engine SSTO Single-stage-to-orbit vehicle SV Sortie vehicle T Metric ton (1000 kilograms) TREE Transient radiation environment effects UHF Ultrahigh frequency UN, UNO United Nations Organization UV Ultraviolet VHF Very high frequency VLF Very low frequency VTOHL Vertical-takeoff, horizontal-landing WXM Weather modification XMTR Transmitter
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