*Update: NBC affiliate WPXI-TV in Pittsburgh is reporting the officer is from the New Florence Police Department. NEW FLORENCE, Pa. Police said a gunman is on the loose in the area of New Florence, Westmoreland Co., just 13 miles west of Johnstown. Sources tell 6 News an officer was responding to a domestic dispute at a house on the 100 block of Ligonier Street in New Florence. Those sources said the officer was shot and found in the yard of a burning house. State Police and many other agencies, including Johnstown Police are converging on the location. Sources told 6...