Police shot and killed a man Sunday afternoon near the East Busway in Wilkinsburg after they said he stabbed a Port Authority police dog to death. Bruce Kelley Jr., 37, was pronounced dead at the scene of the incident on Whitney Avenue after 4 p.m. The K-9 officer, Aren, was a 5-year-old German shepherd who worked patrol and explosives. He had been on the job for four years, said Chief Matt Porter of Port Authority police. According to superintendent Charles Moffatt of Allegheny County police, the incident was first called in to 911 dispatch at 3:37 p.m. after two Port...