MM2 here...worked D type natural cycle boilers on us navy ships.
navy must have thought I was good, made second class in 4 years instead of the average 6, and got several awards.
also do all of my own work on my truck.
Grandfather works in the petroleum field, I've spent a few summers as a teen fixing pumping systems.
Pretty handy when it comes to mechanical stuff, really have fun with it to.