Hold the line, please http://levitra-20.in.net/ levitra 20  Afghans have become proficient at ground-borne evacuations, but still rely on American evacuations when they get into a jam: A CASEVAC is an aircraft that is not dedicated to transporting wounded fighters, and usually does not have medical personnel on board. A MEDEVAC is comparable to an ambulance, where specially trained crews can keep wounded troops alive long enough to get back to a field hospital.