More than 1,000 people gathered at the Tucson Convention Center Wednesday morning for the annual 9/11 Tower Challenge, honoring the nearly 3,000 lives lost in the terrorist attacks 24 years ago.
Participants climbed the equivalent of 110 floors, the height of the World Trade Center towers, with many first responders wearing heavy gear or carrying badges with names of victims.
The event serves as both a memorial and a fundraiser, benefiting organizations that support first responders and military members…