National Museum of Nuclear Science & History
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.
Jean Marley O’Leary began working for General Leslie Groves in June 1941, when she was hired as his personal secretary.
Clark worked in the United States Engineer District Office.
