Richard Feynman and his wife Arline depart for Los Alamos, New Mexico, where Feynman would contribute to the Manhattan Project. This marked the beginning of Feynman's significant involvement in the development of the atomic bomb during World War II. Arline, due to her poor health, traveled with a wheelchair and was provided with a private room on the train. This journey highlights Feynman's commitment to his scientific work and his dedication to caring for his ailing wife amidst the demanding and secretive atmosphere of the Manhattan Project.