In addition to general postwar growth, the Cold War resulted in further growth in both Northern Virginia and Hampton Roads. With the Pentagon already established in Arlington, the newly formed Central Intelligence Agency located its headquarters further afield at Langley (unrelated to the Air Force Base). In the early 1960s, the new Dulles International Airport was built, straddling the Fairfax County-Loudoun County border. Other sites in Northern Virginia included the listening station at Vint Hill. Due to the presence of the U.S. Atlantic Fleet in Norfolk, in 1952 the Allied Command Atlantic of NATO was headquartered there, where it remained for the duration of the Cold War. Later in the 1950s and across the river, Newport News Shipbuilding would begin construction of the USS Enterprise—the world's first nuclear-powered aircraft carrier—and the subsequent atomic carrier fleet.