National Museum of Nuclear Science & History
John C. Hansen served as a Master Sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Laggin’ Dragon.
Robert W. Henderson was an American engineer. He attended the University of California School of Engineering.
M. J. O'Hara worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
