Possible Clues:

• Patriot Act enforcer
• Org. with a top 10 list
• Justice Dept. div.
• Robert Mueller's agcy.
• ''The X-Files'' org.
• Christopher A. Wray's agcy
• D.C. crimebusters
• "Most Wanted" agcy.
• Deep Throat's org.
• Org. that stopped Dillinger