Alright gvamp, if you haven't met this girl yet then that is your #1 priority. Just ask her out to dinner, a movie, etc. If she accepts-great. If she says she has other plans or sorta blows you off then try again another day. If she seems to be avoiding getting together then that isn't a good sign, obviously. Just make sure you don't keep nagging on her about hanging out. That'll make it seem like you've got nothing better to do, boring, desperate, etc. Going to have to use your own judgment on the Air Force thing.
As for the wedding, is it one you would be invited to even if you didn't go with that one girl? And if so, is it far enough in the future that you could ask the girl you've got a crush on to go to it with you if you guys end up going on a few dates? If not then you can still go to it and be that one girl's date, there's no reason you can't be just friends with a girl and go on a "date" with them.
EDIT: I think I was possibly too late in posting this. Oh well.
Stuckey for starring role in the upcoming LP Godzilla movie!