The U.S. Army is developing a new Combat Sandwich. Really. Army food technicians say this sandwich can remain edible, without refrigeration, for three years. Granted, that's nowhere near the staying power of those $4.50 hot dogs they sell at airports, some of which have been rotating on their grills since the Lindbergh flight. But it's still impressive.
I recently had an opportunity to field-test the new Combat Sandwich, and will give you my review once I get my new artificial stomach.