LANCASTER, Pa. — Lancaster police Chief Jarrad Berkihiser said an officer who shot and killed a man armed with a knife was in imminent danger of losing his life and acted appropriately. The police shooting death of 27-year-old Ricardo Munoz on Sunday was captured on an officer's body cam. Looking at that body cam video, Berkihiser said his officer's actions were justified. "There's been some question about, you know, where was the officer's backup? And should the officer have waited for backup? And that's a good question, and we can't always wait for backup," he said. Berkihiser said the officer...