National Museum of Nuclear Science & History
Stanley Liebert was a machinist in the SAM Laboratory at Columbia University between 1944 and 1945.
Conen served as a first lieutenant in the 393rd Bombardment Squadron. He participated in the mission to bomb Hiroshima as a flight engineer for the Top Secret.
Eugene L. Nooker worked as a part of Project Alberta, the team that transported and assembled the two atomic bombs preceeding the August 1945 bombing missions on Hiroshima and Nagasaki.