The cafeteria was loud, the air thick with the smell of greasy pizza and floor cleaner. Fluorescent lights buzzed overhead as students packed around long tables, voices rising and falling in a steady wave. Somewhere near the vending machines, a kid was trying to balance a milk carton on his head while his friends filmed it. A teacher on lunch duty stood near the door, sipping coffee with the dead-eyed patience of someone who had already given up on the day.