The Department of Investigation was a branch of the United States government in 1968. The National Security Agency was an agency within this branch. (TOS: "Assignment: Earth")
This or another Department of Investigation was also mentioned in The New, a magazine written by members of the Q Continuum. (VOY: "Death Wish")
Intelligence agencies of Earth |
---|
Old Britain: British Intelligence • MI5 |
Nazi Germany: Gestapo |
Union of Soviet Socialist Republics: KGB |
United States of America: CIA • FBI • Department of Investigation (NSA) |
United Earth: Section 31 • Starfleet Intelligence |