This research study is a Phase II clinical trial. Phase II clinical trials test the safety and effectiveness of an investigational intervention to learn whether the intervention works in treating a specific disease. The investigational intervention in this study is SBRT with proton or photon radiation (explained below). "Investigational" means that the intervention is being studied. SBRT and proton radiation therapy are FDA approved radiation delivery systems. However, using it as a treatment for stage IV NSCLC is still investigational.