2021, Custer County Kids Celebration Signing for Tristin Greenhagen May 13, 2021 sentineladmin Celebration Signing for Tristin Greenhagen held May 6, 2021 at Custer County High School Tristin Greenhagen will be attending Emmaus Bible College in Dubuque, IA and playing Men’s Basketball. Congratulations, Tristin! Pictured L to R : Samone Greenhagen, Coach Isaac Selden, Coach Eric Prins, Coach Caden Parker, Chance Greenhagen.Courtesy Photo