A new visitor center has been dedicated on a Pennsylvania hill overlooking the site where United Airlines Flight 93 came down during the 9/11 attacks.<br />The visitor center is at the Flight 93 National Memorial near Shanksville.<br />It uses photos, video, artifacts and interactive displays to tell the story of how passengers and crew fought to regain control of the plane.<br />The hijackers are believed to have wanted to crash it into the U.S. Capitol.<br />An outdoor platform offers a commanding view of the crash site where 33 passengers and seven crew members were killed.
