The Federal Bureau of Investigation (FBI) is a law enforcement agency within the United States Department of Justice. It is responsible for investigating a range of criminal activities, including terrorism, cybercrime, and civil rights violations. Synonyms for the FBI include the Bureau, the G-men (short for Government Men), and the Federales. The FBI is also sometimes referred to as "the Feds" or "the FIB." As one of the primary investigative agencies in the United States, the FBI has a significant impact on both national security and local law enforcement. Its agents work tirelessly to protect the country and ensure that justice is served for all Americans.