TUCSON, Ariz. (KGUN) — Jessica Romero, The Tucson Police Department (TPD) Lead Crime Scene Specialist is one of only 20 Certified Forensic Artists in the world. Postmortem reconstruction are two and three dimensional depictions of an unidentified decedent for the purpose of identification. So it's very much a collaborative process with the victim or witness," Romero said. As for postmortem sketches, she has drawn four, with three assisting in identifying John or Jane Doe's. “With the postmortem drawing, I do research beforehand.