https://www.footballzebras.com/2023/06/officiating-crews-for-the-2023-season/     Position - Name - No. - 2022 crew - Yrs. Exp. - College - Occupation   Referee - Carl Cheffers - No. 51 - 24 yrs. (16 as a referee) - California-Irvine - Sales Manager Umpire - Brandon Cruse - No. 22 - same crew - 2 yrs. - South Dakota School of Mines & Technology - Management Consultant Down Judge - Mike Carr - No. 63 - same crew - 7 yrs. - Wisconsin - Athletic Director