I used to work side by side as a software engineer at a major airline (one of the survivors today, this was 20+ years ago) with a guy who was using programming

I used to work side by side as a software engineer at a major airline (one of the survivors today, this was 20+ years ago) with a guy who was using programming as a side job to get a gig as a pilot. He got on with a regional, he told me every pilot had a side gig. They would take turns sleeping in the cockpit. Once he woke up from his nap and the captain had passed out. Good thing autopilot works! More recently, I dated a woman who flies full time for a regional. She qualifies for low income housing.