20th anniversary of 9/11

Penn State professors talk about how 9/11 changed their teaching, on the 20th anniversary of the terrorist attack.

"I think Flight 93 and Gettysburg are in that small group of events that have occurred over the history of this country that have no equals."

Retired State Police Col. Paul Evanko was the person in charge of troopers’ response on Sept. 11, 2001.

On Sept. 11, 2001, Bay was winding down her 37-year career as a flight attendant when she boarded United Flight 93.

'The waters are pumped up to the surface and treated and run through the series of ponds like chambers of the heart.'

The memorial’s designers set out to restore life at the site, and provide a space for healing and reflection in nature.

Like so many around the world, Amer Al Fayadh and his family froze as they watched the Sept. 11, 2001, terrorist attacks unfold on live television.

As the memory of 9/11 fades for some, the Garden of Reflection has become a place to teach children and a peaceful place for those grieving losses.

"This was the first time, and I'm not sure we've seen it since, where you weren't Republican or Democrat, you were Americans."

"Being able to talk to kids and say, ‘There were good people on (board), heroes, and there are people who make these kinds of decisions to put others before themselves every day.”