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Related Clues:
- Subj. of the book 'The Puzzle Palace'
- Gp. whose insignia consists of a bald eagle holding a key
- Hush-hush govt. agency
- Gp. with a Cryptologic Memorial Wall
- Ultrasecret org
- Super-secretive org.
- Fort Meade-based govt. org.
- Decoding org.
- Spying org
- Intelligence org
- Intel interpreter, for short
- Ultra-secretive gp
- Org. that employs mathematicians
- DOD arm
- Wiretapping grp