Flameless Heaters - How MREs Work | HowStuffWorks
Heating an MRE on a field stove. Photo courtesy U.S. Department of Defense. Most human beings much prefer a warm meal to a cold one, especially if they're in cold or wet conditions. Eating cold spaghetti or cold beef stew is definitely no fun. A hot meal, on the other hand, can lift a soldier's spirits. ...
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