Kosher meals are not served in the Mess Hall. You'd have to come up with your own way of doing "kosher style". During Passover, there are separate kosher-for-Passover tables and meals prepared for Jewish cadets. Meals at the Jewish Chapel are kosher. Rabbi Huerta would be a great resource.
If you are in the area or are planning a visit sometime soon, plan on attending Friday night services. Except on very snowy days (when it's too hard to get up the hill) the attendance is very good.