| Aspect | 1811 Series | 1821 Series |
|---|
| Primary Role | Criminal Investigators | Special Agents |
| Certifications | Federal Law Enforcement Certifications | Federal Law Enforcement Certifications |
| Work Environment | Field investigations, crime scenes | Field and administrative investigations |
| Employer | Federal agencies like FBI, DEA | Federal agencies like FBI, DEA |
The 1811 Series typically refers to Criminal Investigators, focusing on criminal cases and field investigations. The 1821 Series, or Special Agents, often involves broader investigative duties, including intelligence and specialized operations. Both roles require similar certifications and work environments but differ in scope and responsibilities.