I only see one question so if you have others please feel free to ask them.
This also applies to the portion I would be entitled to in divorce proceedings. Is this correct?
That is usually true, but the way it is phrased is that when he is entitled to begin receiving retirement, you are as well. What actually happens in a divorce is that your portion is awarded to you by the judge and a QDRO (Qualified Domestic relations Order) is then entered and sent to the pension department. The pension then takes your share and puts it into a separate account, on paper, and when he is eligible to receive his benefits then you are as well.
However, I don't think that means that if he is in prison and ineligible because of that but is eligible in every other way then you have to wait until he gets out of prison. You should be able to draw the pension when he could draw it if he were not in prison. Otherwise it is unconstitutional.
You will want the lawyer to address this in the order though, just to be sure that it is clear.
If your question has been answered then I'd offer my best wishes to you and ask that you please not forget to leave a Positive Rating so I receive credit for my work. Of course, please feel free to ask any follow up questions in this thread. I want to be sure that all of your questions are answered.