Mars is a lifeless world.

Color patterns in animals, whether vertebrates or invertebrates, are designed by the Creator for camouflage, warning, courtship, or, simply, for the aesthetic value.

During World War II, fighter planes often returned from battle riddled with bullet holes. The Allies analyzed the litany of data and mapped the areas that were most commonly struck by enemy fire. In an effort to bolster resiliency for flying combat missions, engineers sought to reinforce the most commonly damaged areas of the planes to reduce the number that were shot down.