The Manhattan Project in World War II was an enormous undertaking that required the efforts of many of the world's most brilliant scientists. Thousands of physicists, mathematicians, and engineers were needed to design, build, and test the world's first atomic weapon. The United States government did everything possible to attract these individuals to the top-secret program. For me, it was personal: One of those assigned to the project was my uncle, John Edmund Gray.

The Manhattan Project in World War II was an enormous undertaking that required the efforts of many of the world's most brilliant scientists. Thousands of physicists, mathematicians, and engineers were needed to design, build, and test the world's first atomic weapon. The United States government did everything possible to attract these individuals to the top-secret program. For me, it was personal: One of those assigned to the project was my uncle, John Edmund Gray.