I am currently deployed in Afghanistan. We're very high (elevation) and it gets extremely cold here in the winter time. I live in a tent, no insulation and no working heaters. I have a Macbook Pro and am wondering whats the best way to safeguard it during the winter months. Can I leave it running almost non stop so it provides itself heat? If it does shut down what would be the best method to turn it back on if it's reached freezing temps? Is there any thing I should know about freezing temps and laptops? Screen breakage? Hard drives? Any and all knowledge, there are a few of us with Macbooks here and plenty more with regular PC's.