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
Arlington County, Virginia Arlington include: The Doors frontman Jim Morrison; Former vice president Al Gore; Confederate general Robert E. Lee; U.S. Army general George S. Patton, Jr.; astronaut John Glenn; actors Warren Beatty, Sandra Bullock, and Shirley MacLaine; journalist Katie Couric; musicians Roberta Flack and Zac Hanson; physician and social activist Patch Adams; and scientist Grace Hopper. Arlington County, Virginia Arlington County is a county in the Commonwealth of Virginia, often referred to simply as Arlington or Arlington, Virginia. In 2016, the county's population was estimated at 230,050, making it the sixth-largest county in Virginia, or the fourth-largest city if it were incorporated