Lung Problems in 9/11 Firefighters (IMAGE) American Thoracic Society Caption Blood biomarkers may be early warning of lung problems in 9/11 firefighters. Credit ATS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.