The FBI Law Enforcement Bulletin has been published monthly since 1932 by the FBI Law Enforcement Communication Unit, with articles of interest to state and local law enforcement personnel. First published in 1932 as Fugitives Wanted by Police, the FBI Law Enforcement Bulletin covers topics including law enforcement technology and issues, such as crime mapping and use of force, as well as recent criminal justice research, and VICAP alerts, on wanted suspects and key cases.

A law enforcement officer (LEO), or peace officer in North American English, is a public-sector employee whose duties primarily involve the enforcement of laws. The phrase can include campaign disclosure specialists, police officers, prosecutors (who are law enforcement officers but not peace officers), municipal law enforcement officers, special police officers, customs officers, state troopers, federal law enforcement agents, secret agents, special investigators, coast guards, border patrol officers, swat officers, gendarmerie officers, immigration officers, court officers, probation officers, parole officers, arson investigators, auxiliary officers, animal control officers, game wardens, park rangers, county sheriffs, constables, marshals, deputies, detention officers, correction officers, sworn campus police officers and public safety officers (at public and private institutions).