Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.
Today’s smart bombs and artillery are astonishingly lethal. But for all their smartness, they need a pair of human eyes to tell the bombs where to hit. But that means those eyes—whether the forward air controllers (FACs) of Vietnam or the Joint Terminal Attack Controllers (JTACs) of today—have to get close enough to see the enemy. Which means the enemy can see them.