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, Virginia in the county, while 86% commute in, with 27% commuting from Fairfax County. An additional 92,784 people commute out for work, with 42% commuting to DC, and 29% commuting to Fairfax County. A number of federal agencies are headquartered in Arlington, including the Air Force Office of Scientific Research, American Battle Monuments Commission, DARPA, Diplomatic Security Service, Drug Enforcement Administration, Foreign Service Institute, the DHS National Protection and Programs Directorate, Office of Naval Research, Transportation Security Administration, United States Department of Defense, United States Marshals Service, and the United States Trade and Development Agency. Companies headquartered in Arlington include AES,