It always seemed kind of unfair to me. Kids with deployed parents have enough uncertainty in their lives. I think kinder to say, “I’m coming home tomorrow,” and then meeting in private. Lots of emotions flow at such moments. Give the kid some room.
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.