Radiation Biology was a lab class where we used radioactive tracers that were commonly used in biology. We studied radioactive decay, safety, waste handling, types of commonly used tracers, scintillation, and such.

Our final big experiment had us feeding a rat a little P32, euthanizing it, freezing it solid, and then cutting it in half length-wise so we could put it on some film plates. After a day in the freezer, you develop that film, and you can see where all the phosphorous goes. (Mostly to the teeth, which are always growing.)

No weapons stuff. All things we would use as lab techs in our future careers. And after I got tired of asking "Do you want fries with that?" I got a job as a Lab Helper I, at the UCSD medical center research facility. Much cooler stuff than McDonald's, but no free lunch.