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
Construction of the Virginia approaches to Arlington Memorial Bridge early 1931, Arlington Memorial Bridge was nearing completion, but citizens of Arlington County had no way of using the bridge as no approaches had been approved by the state or county in the preceding five years. Arlington County itself took no action on any bridge approaches until January 1931, when it began tentatively surveying potential routes. In February 1931, citizens of Clarendon, Ft. Myer Heights, and Lyon Village — unincorporated communities north and northwest of Arlington National Cemetery — met with the Arlington County Board of Supervisors and a Commonwealth's Attorney from the state of Virginia to identify a route