I have a BS in physics but have never been in the "physics" field. I was tired of school and left to make some money. I ended up in aerospace designing test equ

I have a BS in physics but have never been in the "physics" field. I was tired of school and left to make some money. I ended up in aerospace designing test equipment installs for flight test aircraft to support certification. I have spent most of my career in oxygen systems for aircraft and am now in the process of starting a new aerospace company.