Related Clues:

• 'The Puzzle Palace' org.
• Top-secret gp.
• Super-secretive government org.
• U.S. spy org.
• Controversial wiretapping gp.
• DOD component
• Org. in 'The Good Shepherd'
• Cryptologist's org.
• Snoop group. for short
• Top-secret govt. org.
• Covert fed. group
• Ft. Meade-based org.
• KGB's rival
• Langley-based gp.
• MI6 : U.K. :: __ : U.S.