Sector Security, known as the Public Security Maintenance Bureau (ネオ童実野シティ治安維持局 Neo Domino Shiti Chian Iji Kyoku) in the Japanese version, is law enforcement organization in New Domino City that appears in Yu-Gi-Oh! 5D's.
The true goal behind the bureau is to prevent the evil sealed in the Nazca Lines by the Crimson Dragon from being reborn. They attempt to do this by cleansing evil from New Domino City, which Rex Goodwin believes to be the only present day utopia. This is done by keeping unworthy people out of New Domino and forcing them to reside in the run down Satellite.
Believing that allowing residents of Satellite into New Domino will cause the world to fall into disorder, some members, called Securities, often deal with keeping residents of Satellite out of New Domino City.
Sometime after Z-one's defeat, the organization is abolished as New Domino City switches to a government of elected officials. It is replaced by the New Domino City Police Department.
Sector Security is led by a director.
There are several different Sector Security directors throughout the course of the Yu-Gi-Oh! 5D's anime.
- Rex Goodwin serves as the director from the start of the series until he departs for the afterlife in "Signs of Doom, Part 3".
- Lester, Jakob, and Primo all jointly share the position of director from "A New Threat, Part 1" until "The Distorted Past", when Team New World altered the present so that they never were directors.
- Lazar was promoted to director when history was falsified