Think of it as the true end of the beginning. Last week, Theodore "Dutch" Van Kirk, the final member of the 12-man crew of the Enola Gay, the plane (named after its pilot's supportive mother) that dropped the atomic bomb on Hiroshima, died at age 93. When that first A-bomb left its bomb bay at 8:15 on the morning of August 6, 1945, and began its descent toward its target, the Aioli ("Live Together") Bridge, it was inscribed with a series of American messages, some obscene, including "Greetings to the Emperor from the men of the Indianapolis." (That ship had delivered to the Pacific island of Tinian parts of the very bomb that would turn Hiroshima into an inferno of smoke and fire ? "that awful cloud," Paul Tibbetts, Jr., the Enola Gay's pilot, would call it ? and afterward was torpedoed by a Japanese submarine with the loss of hundreds of sailors.)

The bomb, dubbed Little Boy, that had gestated in the belly of the Enola Gay represented not only the near endpoint of a bitter global war of almost unimaginable destruction, but the birthing of something new. The way for its use had been paved by an evolution in warfare: the increasing targeting of civilian populations from the air (something that can be seen again today in the carnage of Gaza). The history of that grim development extends from German airship bombings of London (1915) by way of Guernica (1937), Shanghai (1937), and Coventry (1940), to the fire bombings of Dresden (1945) and Tokyo (1945) in the last year of World War II. It even had an evolutionary history in the human imagination, where for decades writers (among others) had dreamed of the unparalleled release of previously unknown forms of energy for military purposes.