Medical Opinion: Direct Service Connection1. Identify all relevant diagnosed conditions CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD)2. Provide a clear explanation to support the connection of COPD to the military service3. Cite supporting records4. Discuss the claimed cause of the condition5. Discuss chronicity and continuity of conditionTERA Medical OpinionDiscuss the connection between the claimed condition and the TERA activity/exposure For a negative opinion, discuss the factors that outweigh TERA as nexus