It's a day most of us will never forget.
"The situation is that two airplanes have attacked, apparently," said then-New York Mayor Rudy Giuliani, on Sept. 11, 2001.
Many who were alive remember exactly where they were 12 years ago.
Recent Bend arrival Bunny Dubin was at her home just outside Philadelphia on 9/11.
"I was up, the children had gone to school. I received a phone call from my husband, my late husband, saying turn on the television. So I saw the second plane hit live," Dubin said Wednesday. "I knew it was terrorism, and I knew I was going. I basically answered the call."
It's a call many others answered as well.
"First responders run in when others run out," Dubin said. "They're just a different breed."
A year after Dubin volunteered at Ground Zero, she joined filmmaker and fellow responder Lou Angeli, a firefighter working after the Twin Towers fell.
Angeli, who also shoots videos for firefighter training, was one of the only people allowed to bring a camera into the wreckage.
Both Angeli and Dubin couldn't shake what they'd seen rise from the ashes that day, and wanted to share it with the world.
"We covered what the spirit of volunteerism is about," Dubin said. "We covered points like, why does it take a disaster to see the great in humanity come out?"
Dubin interviewed everyone from firefighters to everyday people who just ran in to help for their film, "Answering the Call: Ground Zero's Volunteers."
"People were kind to each other. The police and firemen got so much respect," Dubin said. "If you came out of Ground Zero covered in dust with a hard hat on, people cheered when you walked by them in restaurants."
She said the movie shows that although Ground Zero was an ugly tragedy, it brought out the beauty in people.
You can see the hour-long video here: https://www.youtube.com/watch?v=8POCF37G2hE