In this Oct. 11, 2001 file photo, firefighters make their way over the ruins and through clouds of smoke at the World Trade Center in New York. Many of the first responders and those who labored at the site in the months following the attacks suffer from a variety of respiratory ailments after working at the World Trade Center site. Nearly two years after President Obama signed the James Zadroga 9/11 Health and Compensation Act into law, about 60,000 responders and survivors continue to receive monitoring and treatment for their illnesses as part of the World Trade Center Health Program, one of the lawís two components.