Members of Dallas Bay's Explorer program spent their Labor Day morning participating in the Chattanooga 9/11 Memorial Stair Climb at AT&T Field. More.

The Tunnel to Towers Foundation cares for America's first responders and military heroes and was founded in remembrance of a fallen firefighter who was killed on Sept. 11, 2001. More.

9-11 Commission, bipartisan study group created by U.S. Pres. George W. Bush and the United States Congress on November 27, 2002, to examine the September 11, 2001, terrorist attacks on the United States. More.

The impact of trauma is not related to its size. Trauma is a strong emotional response to distressing events, including abuse, which involves harmful mistreatment. Both can lead to physical and emotional symptoms, affecting mental health in the long term. More.

A lifelong first responder and longtime incident commander in Oregon, Mike Lohrey answered the call in 2001, responding with a team to Ground Zero in the wake of the Sept. 11 terrorist attacks. More.

On Sept. 11, 2001, Vincent Caprio was at the Marriott World Trade Center attending a conference when the terrorist attacks occurred. After watching the twin towers go down, he felt a personal call to devote his time to the recovery effort at ground zero. More.

After watching the Twin Towers collapse on television from his home on Long Island, retired firefighter Bob Beckwith made plans to help with the search efforts. More.

More than two decades after the 9/11 attacks, the National September 11 Memorial & Museum remains steadfast in its commitment to fulfill our collective promise to never forget the victims of the day. Now, we must also ensure that a new generation, and those that follow, share in this essential work. More.