Assume you were born with a medical disability that prevents you from serving in the military but doesn’t typically interfere with physical fitness/ability, are in it purely for the money/connections, are in your early-mid 20’s, have a practical STEM degree, and have meaningful experience in genuinely hazardous work environments.
Where to start?
I also suggest looking into MUFON. I’ve personally considered joining MUFON as a field investigator and think that it could be a good way to get started in the field. That could also lead to connections to branch into other things. You need to reach out to the Director of your local chapter in order to get started, so you can email them with your intent and they may be able to guide you on getting started locally.