Related by context. Frequent words. (Click for all words.) 42 FBI 39 FBI agents 35 counterintelligence 35 MI5 34 homicide detectives 32 counter terrorism 32 Freeh 31 Secret Service 31 counterterrorism 31 CIA 31 intelligence 31 law enforcement 31 detectives 30 Kolko 30 FDLE 30 counterterror 30 FBI informant 30 Scotland Yard 29 postal inspectors 29 detective 29 homicide detective 28 informants 28 Special Agent 27 J. Edgar Hoover 27 prosecutors 27 Joint Terrorism Task Force 27 investigators 27 NSA 26 suspects 26 Counterterrorism 26 FBI Special Agent 26 Marshals Service 26 confidential informants 25 Investigative 25 Customs Enforcement 25 IRS Criminal Investigation 25 GBI 25 prosecutor 24 ATF agents 23 DEA 23 Alcohol Tobacco Firearms 23 investigative 23 forensics lab 23 Postal Inspection Service 23 undercover FBI 23 informant 23 Naval Criminal Investigative 23 OSBI 23 investigatory 22 DEA agents 22 grand jury 22 postal inspector 22 NYPD 22 investigator 22 FBI Joint Terrorism 22 OIG 22 Criminal Investigations 22 undercover 22 Special Investigations 22 police 22 Criminal Investigations Division 21 NSLs 21 Drug Enforcement Administration 21 Criminal Investigation 21 Interpol 21 KBI 21 Detectives 21 Detective 21 Homeland Security 20 Marshals 20 unsolved homicides 20 ATF 20 undercover agent 20 Law Enforcement 20 Explosives 19 Drug Enforcement Agency 19 Customs Enforcement ICE 19 Investigation 19 inspector general 19 Sheriff Office 19 confidential informant 19 DHS 19 Criminal Investigation Division 19 Postal Inspector 18 CBP 18 Fugitive Task Force 18 Border Protection 18 TSA 18 feds 17 wiretap 17 Internet Crimes Against 17 Border Patrol 17 Naturalization Service 17 MCSO 17 DOJ 16 investigation 16 CAIR 16 Internal Revenue Service 16 Police 15 IRS 14 DoJ