National Museum of Nuclear Science & History
Greenwalt worked at the 300 Area at Hanford during the Manhattan Project.
Pettengill served in the 393rd Bombardment Squadron.
Felix Bloch was a Swiss physicist and the winner of the 1952 Nobel Prize. Bloch was born in 1905 in Zurich, Switzerland.
Curt J. Havekotte served in the 1st Ordnance Squadron.