5 things to know as Hiroshima marks 75th A-bomb anniversary

AP1945

FILE - In this Aug. 6, 1945, file photo, smoke rises 20,000 feet above Hiroshima, western Japan, after the first atomic bomb was dropped during warfare. Hiroshima was targeted because it was a major Japanese military hub filled with military bases and ammunition facilities. The city of Hiroshima on Thursday, Aug. 6, 2020 marks the 75th anniversary of the worlds first nuclear attack. (AP Photo, File)