| Acronym | Meaning |
 | HRED | (U.S. Army Research Laboratory's) Human Research And Engineering Directorate (Aberdeen Proving Ground |
| VSAT | Very Small Aperture Terminal (vee-satt) |
| SMIL | Sadomasochisterne I Landet (Danish SM Organisation) |
| PFE | Permanent Forest Estate |
| GSR | Gun Shot Revenue |
| ARDA | Advanced Research And Development Activity (became DTO 2006) |
| TUV | Tuvalu (ISO 3166 Trigram) |
| MJD | Modified Julian Day |
| SU | Soviet Union (ISO 3166 Digram; Obsolete 1992) - Sudan (FIPS 10-4 Country Code) |
| RMDA | Records Management And Declassification Agency |
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