Department of Defense police for the Department of Defense and its component branches of the US Armed Forces. There is a DoD police agency based at the Pentagon named the United States Pentagon Police, which is part of the Pentagon Force Protection Agency. Formerly the Defense Protective Service (DPS), the Pentagon Police have exclusive jurisdiction within the Pentagon Reservation and have concurrent jurisdiction with other police agencies (state, county, and local) in an area of approximately around the complex. Through a memorandum of understanding (MOU) with Arlington County, U.S. Pentagon Police Officers also possess authority, to enforce laws while on duty in Arlington County,
Arlington County Police Department in 2015. The ACPD offers the following services: Arlington County Police Department The Arlington County Police Department (ACPD) is the primary law enforcement agency servicing 207,627 people within of jurisdiction within Arlington County, Virginia. The ACPD was created on February 1, 1940 as the Arlington County Division of Police with Harry Woodyard as the first Chief of Police. It assumed its current name on October 1, 1963 after a departmental reorganization. On February 1, 1940, the first Arlington County policing department was formed, under the name of the "Arlington County Division of Police". A few years later, the first ACPD