Hell yes it's possible. check with finance. I think it used to be something like 75% of the family member's support or something like that.
Pull up some of the soldiers numbers on the electronic medical record sometimes and see how many people are being carried as a dependent. Wait till they wipe out DADT and see how many jump on after that.
You're going to get freaked out, then you'll get pissed at how many people are being carried. uncles, aunts, grand kids.
You might as well get in on it, everybody else is.