 War-related buildup at defense facilities for World War II added to area population in the 1940s.The 1960s brought renewed growth and development, fueled by the construction of Interstate 95, which eased access for commuting and trade.By the 1970s, the city and the area had become a bedroom community for jobs in Northern Virginia and Washington, D.C.. Headquarters agencies, lobbyists, consultants, defense and government contractors, and a range of other businesses were part of the regional economy influenced by the U.S. government.