Host Mark Schauer talks with Chief Warrant Officer 4 (ret.) Stan Gourley, who grew up in New Jersey and served in Vietnam. After 20 years in uniform, he worked 26 years in federal service, ultimately serving at Yuma Proving Ground from 1991 to 2008 and retiring as airfield manager. In retirement, he serves on the board of directors of the Yuma County Aviation Authority, as a Yuma County Juvenile Court hearing officer, and as project leader for Yuma County 4-H shooting sports.

Host Mark Schauer talks with Col. Robert Filbey (ret.), who was born in Champaign, Illinois and had a distinguished career as an Army officer culminating in command of Yuma Proving Ground from 1996 to 2000. Following his retirement, he and his wife Nancy stayed in Yuma, volunteering countless hours to organizations including the Assistance League of Yuma, the Salvation Army, Hospice of Yuma, the Caballeros de Yuma, the Yuma Chapter of the Military Officers Association of America, and the Yuma Military Affairs Council. Filbey was inducted into the Arizona Veterans Hall of Fame in 2016.

Host Mark Schauer talks with David Horn, who grew up in Minnesota, earned a degree in mechanical engineering, and worked in private industry prior to working in the Combat Automotive Division at Yuma Proving Ground beginning in 1985. After 12 years at the proving ground Horn returned to private industry for a decade, but resumed his YPG career in 2007 with the National Counterterrorism Counterinsurgency Integrated Test and Evaluation Center (NACCITEC). He was branch chief of YPG’s Electronic Warfare Branch for three years, then returned to combat vehicle testing until his retirement in 2019.

Host Mark Schauer talks with Julio Dominguez, who grew up in New Mexico and was a Marine Corps Non-Commissioned Officer and underground mining engineer prior to his career at U.S. Army Yuma Proving Ground (YPG). Starting as a test officer in the Munitions and Weapons Division in 1985, Dominguez was YPG Technical Director, the proving ground's highest- ranking civilian, from 2009 until his retirement in 2018.