"...we visited an arch under which lies a stone casket containing a registry of the names of the 140,000 souls who died in the immediate aftermath of the bombing, and the 100,000 more who died later from the effects of radiation. Led by the youngest crew member, Sky Takemoto, we each presented flowers at the arch." Crew members placed flowers at the memorial to the men, women, and children who died in the first use in history of a Weapon of Mass Destruction (WMD): on August 6, 1945, an atomic bomb was dropped by an American warplane on Hiroshima; 140,000 of the 255,000 people in the city, mainly civilians, perished.