Please take a moment and update your account profile. If you have an updated account profile with basic information on why you are on Air Warriors it will help other people respond to your posts. How do you update your profile you ask?
Chapter 12 outlines the classifications. Generally, you only have to do the test once and have it documented in your service record. However, some jobs require more frequent and/or more extensive testing (i.e., Aviation, SPECWAR, SAR, etc.)