Col. Joseph L. Sheffield, the new commander of the 28th Bomb Wing, addresses the audience during the change of command ceremony at Ellsworth Air Force Base, S.D., June 18, 2021. Sheffield is a command pilot with more than 3,600 flying hours and 1,125 combat hours, and has served in a variety of B-1 operational assignments including previous positions at Ellsworth. (U.S. Air Force photo by Staff Sgt. Hannah Malone)