The Coast Guard officially established the Law Enforcement Detachment program in 1982. The first LEDETs operated directly under Coast Guard groups and districts, where they served as law enforcement specialists, conducting training and local operations. In 1986, Public Law (P.L.) 99-570 specifically authorized the establishment of billets for active duty Coast Guard personnel to carry out drug interdiction operations from naval surface vessels provided by the Department of Defense (DoD). Since the Posse Comitatus Act and department policy strictly prohibit Department of Defense personnel from directly engaging in law enforcement activities, LEDETs were tasked with operating aboard United States Navy (USN) ships to investigate contacts and conduct boardings in accordance with Coast Guard policy and directives. In accordance with P.L. 99-570, LEDETs were to deploy aboard U.S. Navy "ships of opportunity", transiting or operating in areas frequently used by illegal drug traffickers. In 1988, P.L. 100-456 made it a requirement that Coast Guard law enforcement personnel be assigned to each appropriate Navy surface vessel that transits a drug interdiction area.