The Supreme Court of the United States Police is a small federal law enforcement agency headquartered in the District of Columbia, whose mission is to ensure the integrity of the constitutional mission of the Supreme Court by protecting the United States Supreme Court building, the Justices, employees, guests, and visitors. Units of the Supreme Court Police include: * Uniformed Services * Protective Services * Threat Assessment Unit * Background Investigation Unit * Honor Guard * Key Response Squad * HazMat/Bomb Response.