Staff Sgt. Michael Pickels, a 28th Aircraft Maintenance Squadron B-1 crew chief, works with a laser engraver in the 28th Maintenance Squadron tool crib at Ellsworth Air Force Base, S.D., Sept. 11, 2018. The tool crib maintains, distributes and accounts for a multitude of tools used by Airmen in the 37th and 34th Bomb Squadrons for maintenance and repair of the base’s fleet of B-1s. (U.S. Air Force photo by Airman 1st Class Thomas Karol)