Federal Bureau of Investigation (FBI)

Bureau of International Narcotics Matters

Bureau of naval personnel

design bureau

National Codification Bureau (NCB)

UNDP Bureau for Crisis Prevention and Recovery (BCPR)

Bureau of Ordnance

design bureau personnel

Bureau of State Security (BOSS)

helicopter design company (bureau)

Federal Aviation Regulation (FAR)

Federal Emergency Management Agency (FEMA)

Federal Protective Service

Federal Security Service of the Russian Federation (FSB)

federal service

FEDCON (Federal Employees and Contractors only)

work in the mail room of Germany's Federal Intelligence Service

Federal Aviation Administration (FAA)

Federal Aviation Regulations (FARs)

active Federal service

International Independent Investigation Commission - Lebanon (UNIIIC)

investigation and intelligence unit (law enforcement)

US Army Criminal Investigation Command

systematic investigation

targeted investigation

accident investigation

Accident Investigation and Prevention Section

accident investigation authority

accident investigation division

crash investigation procedure

safety investigation

safety investigation board

field investigation