LIVE VIDEO: Shanksville, PA marks 14th anniversary since September 11th terrorist attacks

The Flight 93 National Memorial in Shanksville, Pennsylvania honors the 40 passengers and crew of United Flight 93 on the 14th anniversary of September 11th. The program includes remarks by NBC News Correspondent Jim Miklaszewski and readings of the names of passengers and crew members. ... more Duration: {{video.duration.momentjs}}