Arlington County Police Department Police arrested people for violating Virginia's segregation laws. In 1963, the agency assumed its present name. In September 2001, the Arlington County P.D. responded to the Pentagon after terrorists attacked it during the September 11 attacks, as the building is located in the county. Since the establishment of the Arlington County Police Department, 7 officers have died in the line of duty, the most recent in 2016 as a result of an illness caused by the September 11 attacks of 2001. The Chief of Police as of August 2017 is M. Jay Farr. He was appointed by the County Manager
Department of the Army Civilian Police "Department of Defense Police" is a catch-all phrase that refers to any civilian engaged in police duties for the Department of Defense and its component branches of the US Armed Forces. There is no such unified agency that goes under the title "Department of Defense Police". A Fort Irwin Department of the Army Civilian Police Officer is assigned the federal occupational series code "0083", the code reserved for police and federal protective officers in the U.S. Government civil service. This occupational series code applies regardless of what specific agency of the officer works for. Individual installations conduct the hiring process