UPDATE: on-base school bus schedule Published Jan. 22, 2016 28th Logistics Readiness Squadron ELLSWORTH AIR FORCE BASE, S.D. -- The Ellsworth Air Force Base school bus schedule has been updated and can be found by clicking here. These changes will go into effect Jan. 25. Additionally, the Black Hills Estates school bus route has changed and can be found by clicking here. For more information, call Brandy Wyatt, 28th Force Support Squadron school liaison officer, at (605) 385-1381.