A crew chief from the 28th Aircraft Maintenance Squadron, Ellsworth Air Force Base, S.D., prepares to taxi a B-1B Lancer before an approximately 29-hour long-range, long-duration, strategic bomber mission to the U.S. European Command area of responsibility, May 28, 2020. Base maintainers conduct periodic inspections and intermediate-level maintenance work around the clock, in all types of weather at locations around the globe, to ensure the bombers, equipment, and munitions are ready for combat – anytime, anywhere. (U.S. Air Force photo Senior Airman Nicolas Z. Erwin)