Yoshito Matsushige took the only known photographs of Hiroshima, Japan, on Aug. 6, 1945, after the United States dropped an atomic bomb on the city during World War II. Nearly half a century later, Matsushige told his story to Max McCoy, a reporter visiting Hiroshima from Kansas. McCoy speaks with The World's host Marco Werman about the photographer who captured the devastation on film that day.