A brand new lieutenant in the Portland Fire Bureau acted heroically and put his life at risk Wednesday morning to save lives when an explosion destroyed a building and injured several people, the bureau’s fire chief said. Chief Mike Myers said during an afternoon news conference that Lt. Peter St. John was injured in the explosion and had been taken to a hospital. Seven other people – two police officers, two other firefighters and three citizens – were also injured. Portland Bagelworks in Northwest Portland was destroyed in the explosion after a gas leak was detected. Three firefighters were inside when the explosion occurred. Two of them suffered broken legs.