Genetic connection for Lung Cancer? - 1267396

I am writing because I wonder if there is a genetic connection for lung cancer and should children of parents diagnosed with lung cancer be screened?

My father was diagnosed with multiple myeloma and then lung cancer in his mid 80's. The lung cancer was not typed nor were there molecular tests done. It was fairly aggressive. He did not smoke to my knowledge. He did work in the oil industry his whole career, mostly in the office.

My mother was diagnosed with NSCLC, adenocarcinoma (KRAS positive) in her mid 80's. She was a light smoker for about 30 years and quit in her 50's.

As a 60 year old son of both parents who were diagnosed with lung cancer, I wonder if there is a genetic component to it and whether I should have some sort of regular screening program in order to diagnose it earlier when there is a better chance to treat it successfully. Both my parents were diagnosed in a late stage and I would want to do everything to avoid that. I have never smoked but have been exposed to second hand smoke in my earlier working life before indoor smoking was banned and from going to bars.

Is there a genetic component and a recommended screening program? I know that there is a risk of radiation exposure with each scan.