The Federal Bureau of Investigation (FBI) is an agency of the United States Government. It investigates crime across the country. It is dedicated to national security and law enforcement. The Bureau of Investigation was founded in 1908. It was renamed the Federal Bureau of Investigation, FBI for short, in 1935. J. Edgar Hoover was the Director of the Bureau from its start, and continued as Director of the FBI until his death in 1972. Although the FBI works worldwide, their headquarters are in Washington DC. They have 56 main offices in cities throughout the United States.