Tower of Voices structure honors 9/11 victims of United Flight 93
The town of Shanksville, Pennsylvania, is honoring the 40 victims of United Airlines Flight 93, which crashed on Sept. 11, 2001, after being hijacked as part of that day's coordinated terrorist attacks. The Tower of Voices statue stands at the site of the plane crash. CBS News correspondent Chip Reid attended the ceremony unveiling the memorial and joined CBSN from Shanksville.