'external party.' Senate of the Commonwealth of Puerto Rico I United States Dep't of Justice , 1992 WI- 119127 at *3 (D.D.C. May 13, 1992) (citing Bany I United States , 740 F. Supp. 888, 891 (D.D.C. 1990) ("Rule 6(e) does not create a type of secrecy which is waived once public disclosure occurs. The Government is