National Museum of Nuclear Science & History
Andrew Rubis served in the First Ordnance Squadron.
Otto C. Block, Jr. served in the 393rd Bombardment Squadron.
Walter Selander served in the 1395th Military Police Aviation.
Lawrence Antos was a member of the Military Police at Los Alamos. His primary responsibility was checking the passes of civilians entering and exiting Los Alamos.
Andrew Welch was a janitor at the Chicago Met Lab during the Manhattan Project.