| Acronym | Meaning |
 | DMRB | Design Manual For Roads And Bridges |
| ATWA | Air |
| GT | Gigatesla -Gran Turismo - Grand Touring -Guatemala (FIPS 10-4 Country Code; ISO 3166 Digram) |
| ARSC | Arctic Region Supercomputing Center |
| SAIC | Science Applications International Corporation |
| MHW | Mean High Water (nautical Charts) |
| ICRS | International Celestial Reference System |
| C4I OR C?I | Command |
| B2E | Business-to-employee Electronic Commerce |
| MDM | Michigan Dartmouth MIT Telescope Consortium |
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