Question on joining the military?

I recently earned a degree in meteorology in May, but for a long time I have also wanted to serve my country. My education, which is one part of my life I wanted to accomplish, is essentially complete. But the other half, the part that wants to serve, is at a crossroads. The reason being is, how can I serve my country using the expertise I learned in meteorology? Which branch of the military, if any, can utilize what I know about weather/forecasting/etc? If what I know is of no use, what do you suggest I should learn that you believe is interesting, or of potential use?