Airman 1st Class Tyler Sandberg, 28th Maintenance Squadron repair and reclamation journeyman, engraves a wrench with an etching tool on Ellsworth Air Force Base, S.D., Oct. 13, 2011. Sandberg was engraving every tool in each toolbox as a way of maintaining accountability for all tools in his shop and making it easier to locate and organize the tools. (U.S. Air Force photo by Airman Alystria Maurer/Released)