Senior Airman Justin Anthony, 28th Munitions Squadron conventional maintenance crew chief, left, assists Chief Master Sgt. Sonia Lee, 28th Bomb Wing command chief, in loading an FM-152 fuse into an inert GBU-38 v1 during an immersion tour at Ellsworth Air Force Base, S.D., June 27, 2016. Ellsworth’s conventional maintenance crews take an average of 25 minutes to build the 500-pound munition. (U.S. Air Force photo by Airman 1st Class Sadie Colbert/Released)