Senior Airman Sandon Davis, 28th Aircraft Maintenance Squadron composite tool kit specialist, processes equipment during an Operational Readiness Exercise at Ellsworth Air Force Base, S.D., March 14, 2012. Davis and other CTK specialists manage and stock replacement tools as 28th AMXS maintainers check them in and out on. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)