Carl discovers two children, Bonnie and Skarn, serving as combat crew aboard Party Planner.
Carl boards Party Planner to find Bonnie the gnome behind the Door Gun in an oversized Cowboys jersey and helmet, and later realizes the changeling scout "Gangue" is really Skarn, another child he met on the fifth floor, hiding his age with Changeling shapeshifting.
"They shouldn't be here," he thinks. He resolves to rip a new one into Louis and Donut for allowing children into battle as soon as they get back—but the aircraft is already thirty miles behind enemy lines, and right now it is too late to do anything about it.
A moral rupture in Carl's command: two children flown into a warzone without his knowledge.