I fly air ambulance, all in King Airs. No medical training, there are nurses and paramedics in the back who do the medical stuff. We fly two pilots (two PAID pilots) and other duties include helping load the patients, loading of medical equipment and standard charter stuff (updating Jepps, aircraft cleaning, and keeping current for checkrides and groud training). I enjoy it, it is fairly stable, I get a salary and per diem when we fly. It's also interesting flying, going into short and barely paved fields sometimes, other times you go into some international airport. It really isn't a fast way to build time though, I only flew 350 hours last year.