I applied through a recruiter. The process took 6 months. I interviewed at US Navy (Portsmouth, VA) in Jan 2011
Interview
Interview was with a board of nurses at one of the big Navy hospitals. In addition, I was required to do a background check and submit a package application. My recruiter retired mid-process and my application was almost lost, however a family friend knew another recruiter who helped me re-submit it. The application process was over 6 months.