NEW: FDNY and firefighter union leaders demand answers following the release of 170,000 pages of documents revealing government officials misled the public about the toxic conditions around Ground Zero after 9/11. Uniformed Firefighters Association President Bobby Eustace blasted officials for failing to protect first responders who rushed into danger and were forced to fight for the truth about their health. "We're not here as Republicans, we're not here as Democrats, we're here as firefighters. We protect, we serve." "The people sent into that toxic environment deserve to know the full truth about what was in the air." ▻