Cram as much of the material listed in the LOI as possible. Make sure your uniform is straight and gave your sponsor check it out. Go in confidently, and don't make any excuses. Let the chips fall as they may. In the future, learn all the material so when this situation does arise, you're better prepared. I learned a long time ago that there aren't too many opportunities to truly set yourself apart from your peers, so when you get one, you have to kill it. Use this as a learning experience. Good luck!
Take a deep breath. You literally have nothing to loose. They don't take anything away from you if you do poorly. So there's really nothing to worry about. You can only gain in this scenario. If your leadership's disappointed with the outcome tell them to give you more notice next time.
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