Airman 1st Class Derrick Prout, left, and Senior Airman Tyler Marten, both 9th Aircraft Maintenance Unit load crew members, right, secure an auxiliary power unit exhaust diverter underneath a B-1B Lancer aircraft during a Copper Ring exercise at Dyess Air Force Base, Texas, Sept. 13, 2021. The participation of Dyess Airmen in the exercise is imperative in terms of readiness and interoperability between base agencies to respond to various circumstances. (U.S. Air Force photo by Staff Sgt. David Owsianka)