Members of the 28th Maintenance Group review pre-flight checks before giving the B-1B Lancer the thumbs-up to launch from Ellsworth Air Force Base, S.D., Oct. 24, 2019. The B-1 can rapidly deliver massive quantities of precision and non-precision weapons against any adversary. The Department of Defense maintains command and control of its bomber force for any mission, anywhere in the world, at any time. (U.S. Air Force photo by Senior Airman Nicolas Z. Erwin)