Firefighters went door-to-door in hopes of helping save lives in Petersburg Saturday afternoon. Crews were out inspecting smoke detectors and installing the devices in homes without them in the Battersea neighborhood. The Petersburg Department of Fire partnered with the Red Cross to provide the detectors. The Petersburg Fire Marshal said the initiative was part of a blitz to make sure every home in the city has a working smoke detector. “So important we do this because we signed up to save lives, that's what we are here for,” Capt. Dan Macalewso with the Petersburg Fire Department said. “This is just one step in the process of saving a life.