Elaine Galatz was born September 1, 1939 in Milwaukee, Wisconsin and studied English at the University of Wisconsin. In 1961, she married Neil Galatz and moved to Arizona. After attending the University of Arizona and Arizona State University for graduate studies and her teaching certificate, Galatz moved to Las Vegas, Nevada and taught at J.E. Manch Elementary. When her husband opened his own law firm in the mid-1960s, she served as the office manager and bookkeeper.

William Carl Geagley was a civilian observer at the Nevada Test Site during Operation Plumbbob from June 8, 1957 to June 30, 1957. Born July 21, 1890, Geagley graduated from Michigan State College in 1913 with a B.S. in Sciences and Agriculture. A high school science and agriculture teacher, he later worked as a chemical researcher and Chief of the Clinical Laboratory Division of the Michigan Department of Agriculture. In the 1950s he was appointed as a regional Civil Defense Coordinator for the Lansing, MI area.

Born on April 2, 1956, Sheree Downs worked as a concert photographer for the vocal trio the Lettermen from 1976 to 1978. The Lettermen performed at the Riviera Hotel & Casino in Las Vegas, Nevada twice a year during that time, and Downs accompanied them on these trips. She made personal visits to Las Vegas after she stopped working for the singing group, during which she documented the landscape through the eyes of a visitor. As of 2020, Sheree Downs lives in Colorado.