I do not know if this is still the case, but here's a little story. We had a LELT back in the mid 80's. He got out and tried to reenlists as a MR, if I remember correctly. He was told no, that he could only rejoin as a nuke. So he went to the Air Force and tried to join with their equivalent job. They told him that he could not join, after all he was a navy nuke. He wound up reenlisting as an ELT just like he was before.