This one may have a "little" personal bias. I'll admit that. First, look at how much is wasted on processed foods every year- and yes, I said wasted (I claim the first, not fifth ammendment). These so-called foods cause numerous health problems, which will boost the cost of health care and insurance (by increasing the mean risk). Heck, I'd rather see some military run restaurants, which would have the type of food our troops eat, with some of the money funding either our troops or going to their families (that may be completely pie in the sky).
Granted, the savings might not be huge, but you can't discount anything with the deficit we have.