National Museum of Nuclear Science & History
J. B. Livingston worked for the Roane-Anderson Company. He was the first civilian employee on the ground at Oak Ridge.
Nestor worked for Stone and Webster Engineering Corporation.
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.