GREEN BAY (NBC26) — More than 3,000 climbers gathered at Lambeau Field for the 13th annual 9/11 Memorial Stair Climb, one of the largest 9/11 memorials in the country, to honor the 343 firefighters who lost their lives during the terrorist attacks.

Participants climbed the equivalent of 110 stories — the exact height of the World Trade Center towers — completing the journey those heroes began but couldn't finish when they made the ultimate sacrifice 24 years ago. Lambeau Field hosts 13th annual 9/11 Memorial Stair Climb honoring fallen firefighters

Keeping memories alive for new generations

Lt. Shauna Walesh of the Green Bay Metro Fire Department said the event becomes more important each year as fewer people have personal memories of that day.

"I was very young when it happened, only

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