Short answer: Stephen Siller was an off-duty FDNY firefighter who, on his way to play golf with his brothers on the morning of September 11, 2001, heard over his scanner that a plane had hit the North Tower. Finding the Brooklyn Battery Tunnel closed to traffic, the 34-year-old strapped on roughly 60 pounds of gear and ran through the tunnel on foot to reach the World Trade Center, where he was killed in the collapse. His family's foundation, Tunnel to Towers, has since provided more than 1,700 mortgage-free homes to families of fallen service members and first responders, and its annual 5K run retracing his route is one of the largest tribute events held each September.
Of all the individual stories to emerge from September 11, few capture the instinct to run toward danger as literally as Stephen Siller's final run through a closed highway tunnel — a decision that, a quarter-century later, has grown into one of the country's largest charitable foundations for military and first-responder families.
Who Was Stephen Siller?
Stephen Gerard Siller was the youngest of seven children, orphaned by age ten after both his parents died, and raised by his older siblings. He grew up to join the FDNY, eventually serving with Brooklyn's Squad 1. He was 34 years old, married to his wife Sally, and the father of five children — including a son, Stephen Jr., who was just nine months old at the time.
The Run Through the Tunnel
On the morning of September 11, Siller had just finished an overnight shift and was driving to meet his brothers for a round of golf when he heard the news over his scanner. He immediately turned his truck around and drove toward the World Trade Center, but found the Brooklyn Battery Tunnel closed to vehicle traffic for security reasons. Rather than turn back, Siller got out, strapped approximately 60 pounds of firefighting gear onto his back, and ran roughly a mile and a half through the tunnel on foot to reach Lower Manhattan and rejoin the emergency response. He was killed when the towers collapsed, one of the 343 FDNY members lost that day.
From Tragedy to Tunnel to Towers
Siller's siblings, led by his brother Frank Siller, founded the Stephen Siller Tunnel to Towers Foundation in the aftermath, inspired by Stephen's favorite phrase: "While we have time, let us do good." What began as a way to honor one firefighter's sacrifice has grown into a national foundation supporting veterans, first responders, and Gold Star families. Since its founding, the foundation has:
- Provided more than 1,700 mortgage-free homes to families of fallen service members and first responders, including over 220 custom "Smart Homes" built for catastrophically injured veterans and first responders.
- Organized the annual Tunnel to Towers 5K Run & Walk in New York City, retracing Stephen's exact route from the Brooklyn Battery Tunnel to Ground Zero — now recognized as one of the largest tribute run events in the country, with sister events held in cities nationwide and internationally.
- Run the 9/11 Institute, an educational program that has brought a mobile exhibit and curriculum on 9/11 to schools across nearly all 50 states.
The 25th anniversary, marked today: To close out a cross-country "Steel Across America" tour — which carried a 21-foot steel beam recovered from the South Tower to communities nationwide since May — Frank Siller and the Siller family are retracing Stephen's exact route through the Brooklyn Battery Tunnel today before joining supporters at the FDNY's "Ten House" firehouse near the World Trade Center site.
Why the Story Endures
Frank Siller has spoken about his motivation for keeping his brother's story alive, warning as early as 2020 that America risked "forgetting the impact 9/11 had on our nation" as the attacks recede further into history for younger generations. Stephen's story — an off-duty firefighter choosing, entirely voluntarily, to run on foot into a collapsing disaster zone rather than turn back — has become one of the most widely told individual acts of the day precisely because it required no orders, no assignment, and no expectation of recognition.
"While we have time, let us do good." For the full breakdown of the 343 FDNY members lost on 9/11, see how many firefighters died on 9/11.

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