The big 3 out my way (pardon the ebonics) all require a minimum of 2 years of full time pre-hospital (9-1-1 type) of experience for their medics. They prefer the same from the nurses but do not require it. I don't know where you are from, but I will say they are PENNStar, SkyCare, and University Medivac. the are all based in Metro Philadelphia but with the abundance of trauma facilities, they aren't used in the city that often. Maybe once a year if they are lucky. We have 5 level 1 aduld centers, and 3 level 1 ped centers. but only 1 burn unit. That sucks for the firefighters in Philadelphia, Montgomery, and Bucks county. But we get by.