Talking To Parent`s About Getting Married

I need advice on how to go about telling my parent`s that I am getting married. I have been dating my fiance for a long time now, I get along great with his family and my family loves him. They are aware (both families) that we plan on getting married, BUT I don`t think they realize how soon. You see, they know we are going to have a actual, real wedding in June 2004. But, the problem is, both me and my fiance are in the military together, i just received my orders to leave for training in California (we both live in Ohio) for 2 mths. And who knows where after that. I am leaving in a month and a half. The only way for me and my fiance to be stationed near each other is if we are married. Then they can colocate us. We want to go downtown and get married Sept. 12 (just a few weeks) so we can be together. We still want to have the actual wedding in June. I am not sure how to go about telling my parent`s our plans.......HELP!!!!!!!