At a 9/11 anniversary ceremony in Shanksville, Pa., former President George W. Bush recounted the heroism of those passengers aboard Flight 93 as well as the brave servicemen and servicewoman who have responded since that time. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a collection of innovative and powerful news brands …

ABC News’ Linsey Davis speaks with four children of fallen firefighter Carl Asaro, who have all become firefighters themselves in the 20 years since the Sept. 11 attacks. Original source (ABC/Youtube)

A moment of silence was held at ground zero to mark 8:46a, the moment that American Airlines Flight 11 crashed into the north tower of the World Trade Center.» Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. …