I am a paramedic, as well as an EMS instructor.
My partner and I get my truck and supplies at headquarters. We then drive to various street corners in town and wait for someone to call 911 with an emergency, and for dispatch to send us to a call. I help sick and injured people, provide medical care as well as psychological support, and transport them to the hospital. Between calls, I read, surf the internet, watch movies, eat, and talk with my partner. I meet people from all walks of life, and every day is different than the day before.
Here's the first step for high school students
Finish high school and find either a specialized local school or community college that has an EMS program. Take the necessary prerequisites such as First Responders and Anatomy & Physiology. It is also helpful to perhaps do a citizen ride-along with your local EMS agency to see if it is really something you'd like to do.
"You should not jeopardize a good career to go on tour with your bands."