It's nuclear power, which is actually quite safe and really clean contrary to what you hear on the news and stuff. It's a lot of different jobs from paperwork and administrative stuff, to working on the plant floor and in the field, to collecting data about systems and stuff. Mechanical engineering stuff.
Just to clear it up, a nuclear power plant isn't a bomb or anything. There is a possibility of a meltdown I guess but they are usually contained in a huge concrete thing around the reactors. That stuff is monitored like crazy too, so there's a really slim chance of anything happening. The whole time I've lived in the area, I haven't heard of any accidents there.