Airman 1st Class Nathanial Nagel, 28th Maintenance Group dedicated analyst, searches for a tombstone for a family at the Black Hills National Cemetery, Sturgis, S.D., May 28, 2016. More than 190 Airmen from the base volunteered at the cemetery over Memorial Day weekend, providing escorts to families visiting their fallen servicemembers. (U.S. Air Force photo by Airman 1st Class Sadie Colbert/Released)