An aviator from the 34th Bomb Squadron steps down from a B-1B Lancer after returning from a Bomber Task Force (BTF) mission at Ellsworth Air Force Base, S.D., Sept. 8, 2021. BTF missions offer aircrews the opportunity to integrate with allies and partners to ensure regional security. (U.S. Air Force photo by Airman 1st Class Quentin K. Marx)