The three men were physicist who worked in Manhattan Project.
Explanation:
Manhattan Project was a research and development undertaking promoted by United States Army with the objetive of being the first country which develops a nucelar bomb. This project was executed during World War II fearing enemies were already developing nuclear weapons, this is Why US Army Corps of Engineers worked with a group of very well known physicists of that time, for instance, Enrico Fermi, Niels Bohr and Robert Oppenheimer who was the director of the Los Alamos Laboratory.
The answer for this is because of the recourses. There is a lot of food (seafood) and materials to be able to live life in and flourish in. Its actually pretty cool.
