Young campers and a dad saving his family were among the dozens killed in the historic flash floods that tore through central Texas over the holiday weekend.

Jonathan McComb, who lost his wife and two young children in a 2015 Texas flood, is volunteering to comb through debris in flooded areas of Kerr County, Texas. “They’re going through the worst part of their lives right now, and I did that. I know exactly how they feel,” he said.