Related Clues:
- Covert org., once
- Old intelligence gp.
- Supersecretive intelligence org.
- DOD branch
- Secretive U.S. org.
- Erstwhile intelligence org.
- Org. implicated in a wiretapping scandal
- Intel org.
- 1940's spy org.
- WWII intelligence gatherer
- Cryptic org.
- Top-secret org.
- Govt. decipherers
- '40s gp. that trained at Congressional Country Club
- Code-crackers' org.