Frances L. Guinn was born on February 31, 1942 in Arroyo Granda, California.
Guinn began working with the Nevada Test Site in 1970. Guinn was employed as a public relations specialist and coordinated tours of the Nevada Test Site.
Robert Hahn was born on December 19, 1926 in Windsor, Colorado. Robert married Sally E. on April 15, 1950 and they had two children: Karl Robert and Kris Edward.
Hahn was enlisted in the United States Navy Reserve from 1945-1956.
Hahn obtained a bachelor of arts in mathematics from the University of Colorado in 1950.
Hahn began working as a department manager for Edgerton, Germeshausen, and Grier (EG&G) in 1957, eventually retiring in 1992.