Depends. On a lear they are probably transporting a stable patient to a better/specialized facility for follow-on care. Or maybe just to the patient's home-town. There is no justification for incurring extra risk on that mission.

If it's an air-ambulance response to an accident site, that seems like a first-responder to me. Maybe not first-on-the-scene but they have the same time pressure... or somebody wouldn't have called for them in the first place.