Related Clues:
- Cryptologic grp.
- Ultra-secret org.
- Hush-hush grp.
- 'The Puzzle Palace' grp.
- Code-cracking org.
- Codebreakers' org.
- Decryption org.
- Gomer Pyle's org.
- Intelligence org.
- Fed. hush-hush group
- Govt. code crackers
- 'Enemy of the State' org.
- U.S. code and cipher grp.
- Largest U.S. employer of mathematicians
- Iwo Jima Memorial honorees: Abbr.