Do interviews for SWO(N) and subs happen before the other service selection boards? In other words, if I wanted Nuke as a second choice, and aviation as my first choice, would they consider me for nuke stuff first and then aviation? Aviation is my first choice, but I would be happy being a SWO(N) as well. Not so much being a regular swo. Also, is it possible to transfer from SWO to SWO(N)?