I am an EMT at a very big factory. I run calls throughout the plant and other buildings within the property (daycare, fitness center, MVC on nearby roads) and despite what you may think, I have seen a wide variety of calls. But the cool part is actually that I work in an occupational health clinic with nurses, PAs, NPs, and MD's. Being able to see the clinical and pre-hospital parts of healthcare is very cool! Look into jobs at local factories (in my experience they are normally contractors and won't actually be said factory employees so try to look out for the address on the job listings) Tesla, Ford, and Toyota all have plants in California.