One man's journey to honor his fallen brother on 9/11 - FOX News Rundown.

This year will mark 20 years since the 9/11 terror attacks when 19 Al-Qaeda terrorists killed nearly 3,000 people using passenger planes as missiles, b. It was the deadliest terrorist attack on American soil in U.S. history. Chairman and CEO of the Tunnel 2 Towers foundation, Frank Siller, lost his firefighter brother, Stephen Siller on September 11. This year, to honor his brother's memory, he has walked from the Pentagon in Washington D.C. to Shanksville, PA and will end his walk Saturday at Ground Zero in New York. Siller shares his brother's story, explains what has been going through his mind since his journey began and what he wants the younger generation to know about the importance of never forgetting 9/11.

On September 11th, 2001, four planes were hijacked by al-Qaeda terrorists, however only three of these reached their intended destination. Passengers on United Airlines Flight 93 fought with the hijackers on the aircraft and the plane crash landed into an empty field in Shanksville, Pennsylvania. Ken Nacke, the brother of Louis "Joey" Nacke, who died aboard Flight 93, recounts his memory from that infamous day, his disbelief that his brother was on Flight 93 and his pride in his brother and others who fought back against the hijackers.

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