Harry Gold and David Greenglass used Jell-O packages to contact one another as they passed nuclear secrets to Greenglass’s sister Ethel and her husband, Julius Rosenberg. After a trial that remains controversial, the Rosenbergs were executed in 1953 for giving those secrets to the Soviet Union. The Albuquerque apartment where Greenglass stayed still exists; Nagatani staged this scene in its kitchen. He filled the space with packages of cherry Jell-O and simulated drawings for “Fat Man” and “Little Boy,” the bombs dropped on Hiroshima and Nagasaki. He chose cherry because it was one of the first flavors of Jell-O available, suggested the innocence of children and reminded him of red cherry bombs with green fuse stems.