| Acronym | Long Form | 
| ACOM | Alien COMmunications. | 
| AFB | Air Force Base. | 
| AFOSR | Air Force Office of Scientific Reasearch ( USAF ) | 
| APRO | Aerial Phenomena Research Organization | 
| ATRANS | Alien TRANSport | 
| ATECH | Alien TECHnology. | 
| ATIC | Air Technical Intelligence Center ( USAF ) | 
| CAUS | Citizens Against UFO Secrecy. | 
| CIA | Central Intelligence Agency. | 
| COMINT | COMmunications INTelligence. | 
| COMPUSEC | COMPUter SECurity. | 
| COMSEC | COMmunications SECurity. | 
| CSICOP | Committee for the Scientific Investigation of Claims of the Paranormal | 
| CSS | Central Security Service ( USA ) | 
| CUFOS | Center for UFO Studies | 
| DDO | Deputy Director of Operations ( USA ) | 
| DDI | Deputy Director of Information Systems Security ( USA ) | 
| DDT | Deputy Director of Technology ( USA ) | 
| DIRNSA | DIRector of the NSA and Chief of the CSS ( USA ) | 
| DoD | Department of Defense. | 
| EDH | Extradimensional Hypothesis. | 
| ELINT | ELectronic INTelligence. | 
| ELT | Executive Leadership Team of the DIRNSA. | 
| ETH | ExtraTerrestrial Hypothesis or ExtraTemporal Hypothesis | 
| FOIA | Freedom Of Information Act ( USA ) | 
| FTD | ForeignTechnology Division ( USA ) | 
| FTL | Faster Than LLight | 
| HPSCI | House Permanent Select Committee on Intelligence ( USA ) | 
| ICBM | InterContinental Ballistic Missile. | 
| INFOSEC | INFOrmation Systems SECurity. | 
| IOB | Intelligence Oversight Board of the the President ( USA ) | 
| JCS | Joint Chiefs of Staff of the United States. | 
| LASER | Light Amplification by Stimulated Emission of Radiation. | 
| MEPP | Mathematics Education Partnership Program ( USA ) | 
| MIB | Men In Black ( ufology ) | 
| NACA | National Advisory Committee for Aeronautics ( USA ) | 
| NARA | National Archives and Records Administration ( USA ) | 
| NASA | National Aeronautics & Space Administration ( USA ) | 
| NRAO | National Radio Astronomy Observatory ( USA ) | 
| NSA | National Security Agency ( USA ) | 
| NSC | National Security Council ( USA ) | 
| NSCID | National Security Council Intelligence Directive ( USA ) | 
| OMB | Office of Management and Budget of the President ( USA ) | 
| OPSEC | OPerations SECurity ( USA ) | 
| OSI | Office of Scientific Intelligence ( USA ) | 
| RADAR | RAdio Detection And Ranging | 
| RAF | Royal Air Force ( UK ) | 
| RCAF | Royal Canadian Air Force | 
| SDI | Strategic Defense Initiative ( USA ) | 
| SECDEF | SECretary of DEFense for the The United States. | 
| SETI | Search For ExtraTerrestrial Intelligence. | 
| SIGINT | SIGnals INTelligence. | 
| SSCI | Senate Select Committee on Intelligence ( USA ) | 
| SST | SuperSonic Transport. | 
| STT | SecretTerrestrial Technology. | 
| UAO | UnidentifiedAerial Object. | 
| UFO | Unidentified Flying Object. | 
| UFOB | Unidentified Flying OBject. | 
| USA | United States Army or United States of America | 
| USAAF | United States Army Air Force. | 
| USAF | United States Air Force. | 
| USGS | United States Geological Survey | 
| USI | Ufology Society International. | 
| USMC | United States Marines Corps. | 
| USN | United States Navy. | 
| USSR | Union of Soviet Socialist Republics. | 
| VLA | Very Large Array radio telescope ( USA ) |