What can I expect from being assigned to a NG Aviation unit as a 25U?

you are talking planes and communications, what could be more rewarding than that, I wish I was in your boat, Id love to do what you do.

I was a 25U in aviation, get ready to work with the air force a lot. But that depends on what your job is there.

If you personally don't keep yourself in tuned with your job, like anything else you will forget somethings.
But for the most part you would only be important when you have training coming up or AT those are the times you actually touch your equipment unless someone needs help