Its not like they take you right out of nursing school. I was rejected my the first time I tried to get on with them because of lack of experience. Also, if you read what wtbcrna stated in his post "Flight nursing in the AF is basically med-surg in the sky. The patients have to be stable in order to go with normal flight nurses, otherwise they go out with a CCAT team" Flight Nurses in the Air Force don't necessarily have to have critical care experience. Do some reseach...Start by trying this website
http://www.goang.com/
Put flight nurse into the search box and see what you get. You could also talk to a Health professions recruiter as well.