| Abbreviation | Definition |
|---|---|
| ARMS | Automated Records Management System |
| ASAC | Assistant Special Agent in Charge |
| ASAIC | Assistant Special Agent In Charge |
| AT | Anti-Terrorist |
| AT | Atlanta Field Office |
| ATG | Anti-Terrorist Group |
| ATIO | Adjusted Time In Office |
| ATM | Avoiding The Mob |
| ATTF | Anti-Trafficking Task Force |
| AUF | Agent Under Fire |
| AX | Alexandria Field Office |
| BA | Baltimore Field Office |
| BAS | Behavorial Analysis Science |
| BAU | Behavioral Analysis Unit |
| BB | Bank Burglary |
| BBA | Brother Bru-bru Association |
| BCI | Bureau of Criminal Investigation |
| BEX | Black EXtremist |
| BICQ | Background Interrogation and Confession Questionnaire |
| BIN | Bank Identification Number |