Harry Truman became U.S. president after being elected in 1948 to his second and final presidential term; previously he was sworn in following the death of Franklin D. Roosevelt. He authorized the use of atomic bombs on Hiroshima and Nagasaki in Japan during World War II, on August 6 and 9, 1945, respectively. Doris Day stars in the films My Dream Is Yours and It's a Great Feeling.