National Museum of Nuclear Science & History
Ivan Behymer came out from the Dupont 'black powder' plant in Illinois to Richland, Washington (Hanford) in March of 1943.
Colonel Clifford Heflin was a decorated member of the Armed Forces, serving in the Air Force for 31 years.
Breslow worked at Los Alamos during the Manhattan Project.
Bernard Sesko served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.