Doris ("Dorrie") Elizabeth Keirn was born on 24 July 1926 in Altoona, Pennsylvania. Her parents were Ira Dean Keirn (1897-1987) and Hazel Margarete Ramsey Keirn (1897-1985); she had one older sister, Erma J. Keirn (b. ca. 1922). In 1944 she was attending the Altoona School of Commerce.
In June 1947 she and her parents moved to Phoenix, Arizona, possibly for her father's health. In late July or early August Burley Yehnert moved to Phoenix, and he and Doris were married shortly thereafter. In 1971 Doris Yehnert was listed as president of Yehnert Helicopter, Inc. located in Upland, California; it was a commercial helicopter service and possessed five aircraft at that time. By 1993 she was living in Montclair, California. She died on 18 July 2016.
Burley ("Burl") Emerson Yehnert was born on 8 April1925 in Salix, Pennsylvania. His parents were Jonas Yehnert (1876-1942) and Stella Crum Yehnert (1888-1963); he was the youngest of seven siblings. After his parents divorced, he lived with his mother in Altoona, Pennsylvania at 718 8th Avenue; Burley and Doris lived about a mile from each other. In 1943 He graduated from the Eastern Mennonite High School in Harrisonburg, Virginia, and joined the U.S. Army Air Corps on 12 April 1944 at New Cumberland, Pennsylvania.
By November 1944 Private Yehnert was assigned to Squadron D, C.R.P. Prov. [Control and Reporting Post, Provisional?], 2nd Air Force in Nebraska at the Lincoln Army Airfield. In December 1944 he had been transferred to Combat Crew Detachment K, Rapid City Army Airfield (now Ellsworth Air Force Base) in South Dakota. He was promoted to Corporal probably in February 1945 and by mid-March 1945 Yehnert was in England assigned to the 711 Bomb Squadron (K), 447 Bomb Group of the 8th Air Force flying B-17s from the Rattlesden (Suffolk) air base.
Sometime in late 1945 he was promoted to Sergeant and assigned to Squadron A, 301st Army Air Force Base Unit at Drew Field, Tampa, Florida. On 11 April 1946 he was discharged from the service at Fort George G. Meade, Maryland. In December 1946 he moved from Altoona to Akron, Ohio to search for work, living with his brother Dempsey M. Yehnert (1909-1984) and his wife Ethel J. Frederick Yehnert (1915-1999). At the end of July 1947 he had purchased a car with the intent of moving to Phoenix, Arizona to marry his long-time girlfriend and fiancée Doris Keirn; the marriage took place on 5 September 1947 in Phoenix.
While in Phoenix, he was listed as a watchmaker in 1948 and a shop foreman at Luke Air Field in Glendale, Arizona in 1952. By 1970 they had moved to Upland, California and subsequently Montclair, California. Burley Yehnert died 17 April 1998 and is buried in the Riverside National Cemetery, Riverside, California.