On Sunday 1,000 people ascended the stairs of the Freedom Tower in honor of the lives lost in the September 11 attacks. Firefighters, military members, friends and family of fallen first responders, and others climbed nearly 2,000 stairs as part of the Stephen Siller Tunnel to Towers stair climb. "It's a very historic and iconic day," said Frank Siller, brother of Stephen Siller, a firefighter who died in the attacks.

This amazing time-lapse video shows how the 9/11 memorial has changed over the past decade. Created by EarthCam, it shows how Ground Zero changed between 2004 and 2014 in a series of amazing photos pieced together to make a short film.

It was released by the company to mark the first anniversary since the 9/11 Memorial Museum opened on May 15, 2015. More.

Faulconer, Zimmerman and Fennessy also joined the many community leaders from across the nation who have signed the flag.

Zimmerman added “never forget” below her signature. McBrien coordinated creation of the flag, which was called the “United We Stand, United We Sew” project and took place from November 2001 through March 2002. More.

It was a day which was a long time coming for many and on Tuesday shovels finally hit the ground for a new memorial for the victims of the Sept. 11, 2001 terrorist attacks.

The memorial will be built inside the new Cos Cob Park and Tuesday’s ceremony officially started the work which will begin in earnest for an August completion. Close to 30 people attended the event, many of whom were family members of victims of the attacks. More.

As first responders were desperately trying to recover survivors from the World Trade Center on the morning of September 11, 2001, Lieutenant Heather “Lucky” Penney was prepared to make the ultimate sacrifice for her country by flying her unarmed F-16 into United Flight 93 before it destroyed Washington D.C.

When Hendersonville Fire Department Capt. Jamie Cossler travels to New York this weekend, words like “courage,” “sacrifice” and “legacy” will likely come to mind - particularly as he climbs the nation’s tallest building.

A man walking from Florida to New York is raising money and healing his heart with every step. Richard Albero, a former Navy Officer and retired teacher, is making the trip to raise money for the Wouned Warrior Project and honor his late nephew.

"I wanted to be able to do some good, and then I wanted to be able to do it for somebody," Albero explained. Albero's nephew Gary was 39 years old when he died in the September 11th attacks, leaving behind a one-year-old son. More.

Dave Innocenti was one of those guys in the color-coded smocks working on the floor of the New York Stock Exchange, shouting and waving as he executed multi-million-dollar deals.

On his feet all day, he stayed in shape by biking, running, and lifting weights. These days, Innocenti can't even make it to the end of his driveway to get his mail. He walks with a cane, the pain from his hips pitching his torso forward at an awkward angle.  More.