Each year, the Tunnel to Towers Foundation sponsors a five-kilometer run to honor the sacrifice of Firefighter Stephen Siller on September 11, 2001. On that day, following the terrorist attack on the World Trade Center, Stephen Siller strapped on sixty pounds of equipment and rushed on foot through the Brooklyn Battery Tunnel to the twin towers of the World Trade Center.  It was there that he gave his life while helping others.  He was one of 343 firefighters who perished after responding to the World Trade Center alongside 72 police officers.