The Flight 93 National Memorial in Shanksville, Pa. will honor the 40 crash victims of United Flight 93 on the 12th anniversary of the Sept. 11 terrorist attacks.
Events begin 3 p.m. Tuesday as crews break ground on a visitor center. The 6,800 square-foot facility will try to tell the full story of Flight 93 and the terrorist attacks of Sept. 11. The building is expected to be completed September 2015. The Flight 93 National Memorial Capital Campaign announced it raised $40 million dollars to complete the national memorial.