Superintendent of Broward County public schools Robert Runcie (C) speaks during a press conference on the scene at Marjory Stoneman Douglas High School in Parkland, Broward County, Florida, the United States, on Feb. 15, 2018. A total of 17 people were killed and over a dozen others were wounded after a 19-year-old gunman opened fire Wednesday at the high school, authorities said. (Xinhua/Monica McGivern)