I’m gonna hazard a guess that, while local sandwich shops have quality, speed, and razor-thin margins down to an artform, a major fast food franchise is better suited to the task. The major reason being: logistics. A country-wide chain is probably at or close to the scale needed to qualify as a military contractor in this capacity. Nevermind the quality of the food, we’re talking about the ability to move a stupendous amount of calories around. Assuming the photo is of a mobile kitchen, well, that would be the easiest part of all this.

Meanwhile, something familiar from home is bound to be a boost to morale.