In this June 20, 2018 photo, a woman spreads incense over coffins holding the remains of 172 unidentified people who were discovered buried at what once was a military camp in San Juan Comalapa, Guatemala, one day before their formal burial at the same site where they were discovered. A genetic bank of the unidentified is saving the samples of DNA for those searching for their relatives in the future. (AP Photo/Rodrigo Abd)