All three firefighters responded to the World Trade Center on September 11 , 2001 . They all died of illnesses related to their time spent at the site , they say . Hundreds of firefighters and rescue workers died from respiratory failure .
All three firefighters responded to the World Trade Center on September 11 , 2001 . They all died of illnesses related to their time working at the site , officials say . Hundreds of firefighters and ambulance workers suffer from respiratory illnesses .