For a lot of parents, 18 years go by in the blink of an eye as they watch their babies grow into adults. For Letitie Clark, that was true. However, the last 18 years have been spent in mourning and advocacy for her son, Ryan “Stack” Clark, one of the victims of the April 16 shooting. “It is coming up on the 18-year anniversary since it happened, and when someone passes, it seems like things get a little quieter each year. It gets a little less,” Letitie said.