National Museum of Nuclear Science & History
MacDonald was a member of the Instrument Section at the University of Chicago’s Metallurgical Laboratory.
Floyd Jessee was a member of the Military Police at Los Alamos.
John Wickersham was a military policeman and guard at Los Alamos during the Manhattan Project. His duties included patrolling the perimeter of the site on horseback.
Bonnie Pauline Hardwick Rogers worked at the Y-12 Plant, operating the machinery separating the uranium isotope U-235 from it's heavier counterpart U-238.