Paul W. Tibbets Jr., was the pilot of the Enola Gray. He was the pilot who flew Enola Gray, the plane that dropped atomic bomb on Hiroshima. Paul Tibbets describes the view when his plane dropped the atomic bomb as a giant purple mushroom.
The observations in the given excerpt led American citizens to debate whether the government should have the power to use atomic bomb that effected the civilians.
Franklin Roosevelt was able to see the views of the South and the views of the North in his travels. In Georgia, he was able to relate to southerners, so he made sure to acknowledge them in his policies during presidency. :)