National Museum of Nuclear Science & History
William Spindel was a member of the Special Engineer Detachments at Oak Ridge and Los Alamos. Spindel worked in a group that helped make coatings for the implosion bomb.
Frankie R. Johnson served in the 393rd Bombardment Squadron.
Leroy Jackson was transferred into the Manhattan District, the branch of the United States Army Corps of Engineers tasked with overseeing the construction of critical Manhattan Project sites, shortly after its formation in 1942.