I definitely have to second Obie's suggestion of having a DE in your kit. SR's require a little bit more time and care to use. The shave itself takes a bit longer, and then you need to add in stropping time. I'm assuming your deployment is for a year. If that's the case, you'll need a hone to keep the edge on your straight. If you're not familiar w/ honing a straight, this will cause problems and possibly render the SR unuseable. Honing one of these bad boys is not at all like honing a knife.
You may also want to consider adding a bottle of after shave balm to your kit. THis will help keep your face in good shape in that dry environment. Nivea is a good one. Not at all greasy, and very lightly scented.
As a side note, I was over there in 2003, as part of the US Coast Guard detachment assigned to Naval Coastal Warfare Group One (me on the right)