The Decision to Drop — The dawn of the Atomic Age began with the design and testing of the world’s first atomic bomb during the Manhattan Project. Visitors are introduced to the daily lives of the scientists who lived at Los Alamos and journey with them to the Trinity site where the first explosion occurred in 1945. These exhibits include a series of displays striving for objective examination of the history leading up to, and the policy decisions regarding, deployment of the first nuclear weapons code-named Little Boy and Fat Man.