On August 9, 1945, on the tiny island of Tinian in the South Pacific, a twenty-five-year-old American Army Air Corps major named Charles W. Sweeney climbed aboard a B-29 Superfortress in command of his first combat mission, one devised specifically to bring a long and terrible war to a necessary conclusion . . .

The last military officer to command an atomic mission, Maj. Gen. Charles W. Sweeney has the unique distinction of having been an integral part of both the Hiroshima and the Nagasaki bombing runs. Now updated with a new epilogue from the coauthor, Sweeney's book is an extraordinary chronicle of the months of careful planning and training; the setbacks, secrecy, and snafus; and the nerve-shattering final seconds and the astonishing aftermath of what is arguably the most significant single event in modern history: The employment of an atomic weapon during wartime.