In this study, the investigators have an opportunity to identify and intervene with COPD patients. The vast majority of early stage lung cancer patients are much more scared of their cancer than their COPD. Upon identification of COPD and recognition of patient tobacco habits for patients planned to undergo SBRT, interventions can potentially be made that will reduce COPD hospitalization rates, second primary lung cancer rates, and likely death rates. The interventions are broadly available and relatively easily instituted and include the following: seeing a doctor to diagnose their other underlying illness or illnesses (both respiratory and cardiovascular), smoking cessation if they are smokers, and CCMP's and pulmonary rehabilitation which have shown measurable COPD benefits in prior trials.