National Museum of Nuclear Science & History
Robert Schwerin was drafted shortly before the end of the war, in 1945. Following the war, he re-enlisted to avoid being put on a desk job.
Jesse Kupferberg was a Technical Sargeant in the US Army who participated in Project Alberta, the group tasked with transporting and assembling the two atomic bombs in 1945.
Niles worked for Stone and Webster Engineering Corporation.
W. M. Hopkins worked for the Tennessee Eastman Corporation at the Y-12 Plant.