National Museum of Nuclear Science & History
Grover H. Catt served in the 393rd Bombardment Squadron.
Lewis W. McDuffie served in the 603rd Air Engineering Squadron.
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.
Bob Emigh was in the Navy and worked with Deak Parsons on telemetry for the bombs. He was assigned as the science officer for the planned third bomb.