The PJ's are qualified to be medics with special operations-trained paramedic certifications. They are fighters too and can be participating in combat when they'll have to rescue others behind enemy lines or in enemy territory.

Do medics fight in combat?

Yes, they do. While medics historically didn't carry weapons, today's combat medics are not only trained to fight, but are allowed to defend themselves if they come under attack, usually at short range and usually in response to a surprise attack while attending to or evacuating a wounded patient.

What do Special Forces medics do?

SF medics are trained to provide care and treatment to unit members as well as to local indigenous populations. Additionally, SF medics learn how to deliver care during missions and while under fire, to operate combat laboratories, and to treat emergency and trauma patients.