Have you looked into a part time job flying for Amerijet or some King Air operator? Assuming you have C-12 experience, that might be an easy thing for you to do. I know of others in non-flying jobs in the USAF who have taken a part time civie job in order to remain current. I also am certain you could get a job at any regional when you get out and could work your network while you accrue more recent flight experience. On retirement pay you could probably still feed the family on RJ FO wages, at least for a while.