VIDEO: A firefighter was killed and at least a dozen others were injured when a natural gas explosion leveled at least two buildings in Sun Prairie (northeast of Madison), authorities said Wednesday, July 11. Friends and loved ones have identified the fallen firefighter on social media and with FOX6 News as Captain Cory Barr. Another firefighter suffered critical injuries after fire crews arrived to investigate a gas leak in downtown Sun Prairie about 6:30 p.m. Tuesday and several buildings exploded, ignited a fire that sent billowing smoke that could be seen for miles around. Four other firefighters, a police officer and seven civilians suffered injuries, according to Sun Prairie Police Lt. Kevin Konopacki. The firefighter who was critically injured has been stabilized, Konopacki said.