Mark Luken, West River Monument Company monument engraver, carves out letters from a rubberized stencil in the process of engraving a memorial at Memorial Park in tribute to Airman 1st Class Leasha Jill Bjork-Hardesty at Ellsworth Air Force Base, S.D., July 19, 2012. After a rubberized stencil was secured on a monument, engravers used a sandblaster to engrave letters. (U.S. Air Force photo by Airman 1st Class Hrair H. Palyan/Released)