Richland, WANonoka Koga was a little shocked when she arrived as an international exchange student at Richland High, home of the Bombers. There on the gym floor was a big green “R” over a mushroom cloud from an atomic bomb. The school logo seemed to be everywhere, Koga said. She is from Fukuoka, Japan, not far from Nagasaki. To her, the mushroom cloud is a reminder of those who lost their lives in