RecruitingClinical trialDeployment-Related Lung Disease Research Database and BiorepositoryThe purpose of this research study is to establish a research database and biorepository for patients at National Jewish Health (NJH) who served in Operation Iraqi Freedom (OIF) or Operation Enduring Freedom (OEF). This study will also include civilian contractors who worked as part of these military operations in Iraq or Afghanistan. The biorepository would store blood samples obtained from these patients during a clinic visit. The research database would store prospectively and retrospectively collected clinical and exposure data that would enable us to comprehensively characterize each case.