Airman 1st Class Dylan Giron, left, and Senior Airman Jesse Knappen, 28th Munitions Squadron crew members, apply a lanyard to a bomb dummy unit-50 as part of the delayed timer unit during a training session at Ellsworth Air Force Base, S.D., Jan. 19, 2016. The 28th MUNS consists of more than 240 Airmen working in four flights, providing support for the 27 B-1 bombers assigned to Ellsworth AFB. (U.S. Air Force photo by Airman 1st Class Denise M. Nevins/Released)