| ACS | Automated Case Support |
| CBP | Customs and Border Protection |
| CIO | Chief Information Officer |
| CJIS | Criminal Justice Information Services Division |
| CLASS | Consular Lookout and Support System |
| COOP | Continuity of Operations Plan |
| CT Watch | FBI Counterterrorism Watch |
| DHS | Department of Homeland Security |
| DOD | Department of Defense |
| DOJ | Department of Justice |
| DOS | Department of State |
| DRP | Disaster Recovery Plan |
| EAP | Emergency Action Plan |
| EMA | Encounter Management Application |
| FBI | Federal Bureau of Investigation |
| FTTTF | Foreign Terrorist Tracking Task Force |
| GAO | Government Accountability Office |
| IAFIS | Integrated Automated Fingerprint Identification System |
| IBIS | Interagency Border Inspection System |
| INA Code | Immigration and Nationality Act Code |
| IT | Information Technology |
| JTTF | Joint Terrorism Task Force |
| [SENSITIVE INFORMATION REDACTED] |
| MOU | Memorandum of Understanding |
| NAILS | National Automated Immigration Lookout System |
| NCIC | National Crime Information Center |
| NCTC | National Counterterrorism Center |
| NICS | National Instant Criminal Background Check System |
| NLETS | National Law Enforcement Telecommunication System |
| NTC | National Targeting Center |
| NYSIIS | New York State Identification and Intelligence System |
| OIG | Office of the Inspector General |
| OMB | Office of Management and Budget |
| [SENSITIVE INFORMATION REDACTED] |
| TDY | Temporary Duty |
| TECS | Treasury Enforcement Customs System |
| TIDE | Terrorist Identities Datamart Environment |
| TSA | Transportation Security Administration |
| TSC | Terrorist Screening Center |
| TSDB | Terrorist Screening Database |
| TTIC | Terrorist Threat Integration Center |
| [SENSITIVE INFORMATION REDACTED] |
| TWWU | Terrorist Watch and Warning Unit |
| USPS | United States Postal Service |
| VGTOF | Violent Gang and Terrorist Organizations File |