You realize that it was more for the ostensible situation that the school was in the blast zone but not in the immediate kill zone? And that by hiding under a

You realize that it was more for the ostensible situation that the school was in the blast zone but not in the immediate kill zone? And that by hiding under a desk, children might prevent themselves from being struck by falling debris? They knew perfectly well what they were saying. There's no point in making a kid hysterical about getting killed by the intense heat and pressure of an atomic bomb every time there's an air raid drill.