History of the United States (1991–2008) South Tower less than twenty minutes later at 9:03 A.M. (EST), resulting in the collapse of both 110 story skyscrapers, and the destruction of the World Trade Center. The third hijacked plane, American Airlines Flight 77, was crashed into the Pentagon (the headquarters of the United States Department of Defense) in Arlington County, Virginia, demolishing a section of the outer southwest facing wall. After discovering that their plane, United Airlines Flight 93, was going to be used as a missile, passengers attempted to regain control of the plane which had been redirected towards Washington, D.C. However, after regaining control from
Construction of the Virginia approaches to Arlington Memorial Bridge of Virginia abandoned its plans and agreed to begin work on the northern route for Lee Boulevard. For nearly a year, state and county officials had disagreed whether the northern route rights-of-way were adequate to begin construction. The state disagreed, but Arlington County officials did not wish to spend more money in the depths of the Great Depression to acquire more rights-of-way. By actively reconsidering the southern route, however, the state of Virginia put pressure on Arlington County to fix the rights-of-way problems with the northern route. Agreement to begin construction on the northern route finally was reached on August