If you're more interested in the fire side, you can get on an engine. You'll respond to structure fires, car accidents, lightning strikes, and all sorts of well-being checks for people who just need help getting up off the floor.
If you're interested in medical stuff, you can get on an ambulance. You'll run 911 calls and get some real exposure to the human condition. It's a great way to learn about pre-hospital and emergency department care. It's also a great way to get a reality check on how the US healthcare system works, and how it helps or hinders the people who need care the most.
In many parts of the country fire and EMS are part of the same service and system, so you'll get exposure to a little bit of everything. I'd highly recommend fire and EMS as an alternative career path for anyone who is looking for something different, other than tech.