National Museum of Nuclear Science & History
Lemmon was a Technical Sergeant who worked at Hanford during the Manhattan Project.
Charles W. Sweeney served as a major in the 393rd Bombardment Squadron. He was regularly assigned to the Great Artiste as the aircraft commander and participated in the mission to bomb Hiroshima as co-pilot of the Great Artiste.
Thornburgh worked at the 200 West Area at Hanford during the Manhattan Project.
