National Museum of Nuclear Science & History
Roger Sr was a mechanical engineer having graduated from Stanford University during World War II. He and his wife, Katherine Barnes were recruited by the FBI who made contact with them at the Santa Fe training station when they were leaving town, after their honeymoon at Ghost Ranch.
Marte Previti was a part of the Alsos Mission, a Manhattan Project effort in Europe to discover the progress of the German atomic project.
Kendall worked in the 200 West Area at Hanford during the Manhattan Project.