The intrepid journalist who exposed Hiroshima's horror

After the U.S. dropped an atomic bomb on Hiroshima, Japan, it was another year before first-hand accounts emerged. Journalist John Hersey helped expose the bomb’s lasting damage, which the U.S. government tried to downplay. In a new book, “Fallout,” which coincides with the 75th anniversary of Hiroshima, author Lesley Blume examines Hersey’s critical work. Jeffrey Brown reports.