So my fiance is joining the Air Force.

Don't go around crashing my dreams. Silly Vlad.

Its not silly. They say they don't have that much of an income, and the dad is going to the air force, maybe stationed away from where they live. I don't think it is good for the child to be raised in an environment where the dad isn't there to see him grow up. It is better, in my opinion, for the dad to be there. So unless they know if and where he is stationed it might be best for the both of them to wait before having children.