During bomb drills, we students were told to crouch under...

During bomb drills, we students were told to crouch under our desks. Apparently the desks used in classrooms in the fifties were made of an exceptionally missile-resistant variety of wood. During the Cold War years I often wondered why it never occurred to our defense planners to protect the entire nation from nuclear attack by simply covering it, from sea to shining sea, with a huge Strategic Classroom Desk.