'Even after the passage of six decades, its role in ending the war and the morality of the atomic bombings continue to be hotly debated. 'On August 6, 1945, in the first combat use of the atomic bomb, this Army Air Forces Superfortress from the 509th Composite Group dropped the 13-kiloton Little Boy on the Japanese city of Hiroshima, decimating it,' the authors continue. 'Of all the World War II aircraft in the collection of the National Air and Space Museum, the most significant is the Enola Gay.' So write curators Roger Connor and Christopher Moore in the new Smithsonian book In The Cockpit II: Inside History-Making Aircraft of World War II, published this month by Collins Design.