If you're in the military and preparing to ship out overseas, or even across the country, one of your missions should be learning about your auto insurance options. No matter where you're headed, the best thing you can do is "converse with your insurance company, maintain your coverages and pay your premium," says Mike Baker, director of Geico's Military Department, which specializes in auto insurance issues for military members. The wrong choices could mean your rates rise dramatically. You may try to save money by dropping coverage entirely if you deploy overseas -- and wind up paying much, much more when you return home. Here's what you need to know.