5.6K views · 89 reactions | "In this way we can remember the actions and the lives of those 40 citizen heroes as we continue to hear their voices." Flight 93 National Memorial architect Paul Murdoch explains his inspiration for the Tower of Voices, a 93-ft-high musical memorial being built in Shanksville, Pa. (Video by Stephanie Strasburg/Post-Gazette) | Pittsburgh Post-Gazette | Facebook

6.5K views · 128 reactions | ALWAYS REMEMBER: Names of the Flight 93 passengers and crew members were read, with the ringing of bells, during the annual Sept. 11 observance at the memorial site in Somerset County, Pennsylvania. | WTAE-TV Pittsburgh | Facebook

32K views · 2.4K reactions | Today marks 20 years since the brave passengers and crew of Flight 93 saved countless lives by confronting terrorists and crashing their plane into a field in Shanksville, Pennsylvania. We will never forget their heroism. | Office of the Governor of Pennsylvania | Facebook