This trial studies if adding SBRT (a type of precise radiation) to the usual treatment is better for patients with a specific type of lung cancer that can't be removed by surgery. The usual treatment includes IGRT (another radiation therapy that uses pictures to target the tumor), chemotherapy (drugs to kill or slow cancer), and immunotherapy (treatment that helps your immune system fight cancer). SBRT could mean fewer doses and less harm to healthy tissue.

• The study may involve more frequent visits and treatments than usual care alone.
• Participation requires regular check-ups, CT or PET scans.
• Participants must be 18 years or older and meet specific health criteria.

Participants will be randomly assigned to receive either the standard treatment or the standard treatment plus SBRT. It is important to understand that there are potential risks, such as side effects from treatments. Additionally, if you've had treatment for other cancers, you may still be eligible. If you're considering this study, discuss with your doctor to ensure it's right for you.