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)