Mark and Caleb Luken, West River Monument Company monument engravers, prepare to review their work on a memorial at Memorial Park in memory of Airman 1st Class Leasha Jill Bjork-Hardesty at Ellsworth Air Force Base, S.D., July 19, 2012. Bjork-Hardesty was killed in a vehicle accident Nov. 16, 1999, during Operation Southern Watch at Prince Sultan Air Base, Kingdom of Saudi Arabia. (U.S. Air Force photo by Airman 1st Class Hrair H. Palyan/Released)