I was a signal guy and now I am an 18E. I thought I knew some stuff about comms. In just under a year on a team I have learned so much I have had to start forgetting other stuff to make room for it. Coming out of the course I was anxious about the things I didn't know. But I found out real quick that the people who have the most trouble are the people who think they ALREADY KNOW IT ALL when they show up. Your team (if you ever get to one) knows that you don't know certain things. They will not allow you to fail.
If after reading all of these responses you still feel this way please download the following form and turn it in to the appropriate authorities. We keep a handy supply of these in the team room just for people like you.
http://www.eatliver.com/i.php?n=2026