National Museum of Nuclear Science & History
John Smith was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
William Stewart was an engineer in the Special Engineering Detachment at Los Alamos, New Mexico. Specifically, Stewart worked in “Project Trinity” under the leadership of George Kistiakowsky and Kenneth Bainbridge.
Williams worked for Stone and Webster Engineering Corporation.
Peter Vandervoort is an American astrophysicist and professor emeritus in the Department of Astronomy and Astrophysics at the University of Chicago.