Deputy U.S. Marshal Chase White, 41, was killed in the line of duty in Tucson, Arizona while part of a fugitive task force serving an arrest warrant. White, a three-year U.S. Marshals Service veteran and a lieutenant colonel in the Air Force Reserve preparing for deployment, was a married father of four.

Officers were serving a warrant for 26-year-old Ryan Schlesinger, wanted for stalking a Tucson police sergeant, when Schlesinger allegedly opened fire and struck Deputy White multiple times. The shooting proved fatal, marking the first time in 66 years that a federal marshal was killed in the line of duty in Tucson. Family and colleagues remembered White as honorable, kind-hearted, a devoted husband and hands-on father; a cousin called him the family’s golden child.

Anyone with information who knew Deputy White or the events that evening is asked to come forward.