Valley community members climbed stairs at Desert Diamond Arena in Glendale on Saturday to remember first responders killed in the terrorist attacks on September 11, 2001.
Thursday marks 24 years since that day, which was the deadliest terrorist attack in history.
More than 1,000 people, including firefighters and other first responders in full gear, participated in the 9/11 Tower Challenge. They climbed 2,071 arena stairs, which was the number of steps it took to climb the World Trade Center’s twin towers…