Which of the following is a major federal agency that works closely with Special Agents?

The Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) is a major federal agency that indeed collaborates closely with Special Agents. The ATF is responsible for enforcing federal laws related to the regulation of alcohol, tobacco, firearms, explosives, and arson. Agents in this agency often work on investigations that involve illegal trafficking and distribution of these controlled items, making collaboration with Special Agents crucial for gathering intelligence, conducting operations, and executing arrests related to broader criminal activities.

The ATF's specialized focus allows them to work with Special Agents from various other law enforcement agencies, enhancing the efforts in combating organized crime and ensuring public safety. This inter-agency cooperation is key, particularly in operations targeting gang activities, smuggling, and other illicit operations that may involve multiple areas of jurisdiction and expertise.