Fun fact: in California if you stop renewing your fluoroscopy license for a few years and then decide you want it again you just pay a fee of something like $20 per year you missed up to 5 years then you have the license back without having to retake that awful test. Happened to me. Renewal was sent to the wrong address and I didn't have the license for two years! When I did a locum I needed the license and just paid some back fees and viola!