Family of off-duty FDNY firefighter retraces steps as Tunnel to Towers mission continues on 9/11 anniversary

Tunnel to Towers Foundation Chairman and CEO Frank Siller and family members honored his late brother Stephen Siller — a heroic 34-year-old husband, father, and firefighter who, after hearing about the Sept. 11, 2001, terror attack, loaded himself down with gear, and traversed through the Brooklyn-Battery Tunnel on foot heading to the Twin Towers, and ultimately giving his life — by retracing the man's steps on Friday as Americans marked the grim 25th anniversary of the heinous attacks.

"Together...