During her occasional runs to the lavatory she spied a new chart on the table, covering a vast swath of the earth with Newfoundland in the upper right, Florida in the lower right, the Aleutians in the upper left, and Baja California at the bottom. Both nations’ Pacific approaches were carved up into polygonal swatches labeled in block capitals: ALASKAN DEWIZ and DOMESTIC ADIZ and PACIFIC COASTAL CADIZ and so on.