National Museum of Nuclear Science & History
Robert Rumer worked for the United States Engineer District Office.
Nelson C. Baker was a lieutenant working as an executive officer to Captain Palmer in the Second Provisional Special Engineer Detachment at Los Alamos.
George L. Brabenec was a master sergeant in the 393rd Bombardment Squadron. He served as the flight engineer of the Necessary Evil, but flew in the Big Stink during the Nagasaki mission.