ELLSWORTH AIR FORCE BASE, S.D. -- Airman 1st Class Zach Ferris, 28th Aircraft Maintenance Squadron crew chief, installs an over-wing fairing seal, March 31. The 28th Aircraft Maintenance Squadron is the largest squadron in the 28th Bomb Wing and manages the on-equipment maintenance, weapons loading and support activities of the B-1B Lancer. (U.S. Air Force photo/Airman 1st Class Corey Hook)