National Museum of Nuclear Science & History
F. J. Underwood worked for the Roane-Anderson Company.
Charles Levy was a first lieutenant in the 393rd Bombardment Squadron of the 509th Composite Group. He trained in Wendover, Utah, before leaving for Tinian Island.
Walter F. Arnold was a staff member at Los Alamos during the Manhattan Project.
Manuel Montes Alcalde (1921-2009) was a machinist at Los Alamos during the Manhattan Project. Alcalde was born in San Leandro, California.
