 Indicted for child endangerment more than two years after the elementary school massacre. An 18-year-old gunman opened fire on a fourth-grade classroom, killing 19 students and two teachers. Police did not engage the shooter for more than an hour. Arredondo was the on-scene commander and later admitted he decided not to try and neutralize the shooter immediately. A report by the Justice Department found leadership failures may have... Fox's Jack Callahan. America's listening to Fox News.