National Museum of Nuclear Science & History
Thomas S. Grennan served as a 2nd lieutenant in the 393rd Bombardment Squadron.
Werner H. Haak was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Robert H. Maas served in the 603rd Air Engineering Squadron.
George I. Schreffer served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew on the B-29 Jabit III.
