Col. Brian Hollis, 434th Operational Support Squadron commander, right, stands beside Col. Paul Gates, 434th Air Refueling Wing vice commander, during a promotion ceremony at Grissom Air Reserve Base, Ind., April 7, 2018. Before taking command of the 434th OSS, Hollis held numerous jobs within the 434th ARW, including tanker scheduler, nuclear plans officer, assistant chief pilot tactics officer, chief of mission development, chief of plans and director of operations. (U.S. Air Force photo/Tech. Sgt. Benjamin Mota)