This study is for patients who have been diagnosed with advanced non-small cell lung cancer. The purpose of this study is to compare the usual treatment alone to using SBRT plus the usual treatment. This study will help the study doctors find out if this different approach is better than the usual approach. To decide if it is better, the study doctors will be looking to see if the addition of SBRT increases the life of patients by 6 months or more compared to the usual approach. The study drugs are nivolumab and ipilimumab. Participants can expect to be on this study for up to 2 years.

This study is for patients that have been diagnosed with non-small cell lung cancer. The purpose of this study is to compare the usual treatment alone to using pembrolizumab plus the usual treatment. The investigational drug in this study is pembrolizumab. This drug, pembrolizumab is already approved by the FDA for use in patients with more advanced lung cancer. Participants can expect to be on treatment for up to a year. Participants will be followed for up to 10 years after completion of treatment.