| Abbreviation | Definition |
|---|---|
| DOE | Department Of Energy |
| DRG | Dangerous Religious Group |
| DS | DeStroyed |
| DST | Direction de la Surveillance du Territoire |
| DTL | Defense Telephone Link |
| ECF | European Council of Forgery |
| ECP | Engineering Change Proposal |
| ECS | Encryption Control System |
| ECU | Evidence Control Unit |
| EDC | Every Day Carry |
| ELSUR | ELectronic SURveillance |
| EP | El Paso Field Office |
| EQAO | Education Queen attacking Otto |
| ERDA | Energy Research and Development Administration |
| ERTF | Emergency Response Training Facility |
| ESRC | U.S. - China Economic and Security Review Commission |
| ETA | Euzkadi Ta Askatasuna |
| ETD | Explosive Trace Detection |
| EW | Entry of Wanted person |
| FA | Federal Assassin |