 FDNY firefighter Daniel Foley assisted in rescue and recovery efforts at Ground Zero, but Daniel couldn't have known that his own heroism would cost him his life more than 18 years later. Caused by the toxic dust that formed when the Twin Towers collapsed, victims and first responders are still suffering and dying from 9-11, yet children in this nation are growing up unaware of America's darkest day. The Tunnel to Towers has their 9-11 Institute,