Thanks for your replies. Yeah, I know that the working visa might be the biggest problem. Unfortunately it's really hard for people outside your country to go there for work. However, all this is just questions. My girlfriend is a vet and she's looking for an one-year internship for her career. There's some places around the world which would be an option, for an example USA, Australia, UK and New Zealand. So that's why I'm checking the opportunities for works within my working area. Besides, I've always wanted to live in US for a year or so. I love your country and the nature.
Kiwiology:
From one place to another, You said you're an New Zealander. Do you have the same system over there with paramedics? I guess it's very similar to the UK EMS-system? Do I have to go throught the same steps as in US for working in your country? I guess it's easier to get a working Visa in NZ though. (?)