After a teenage gunman killed 17 people at a Parkland, Florida, high school last month, schools across the country were hit by a wave of copycat threats.
In Colorado, at least two high school students were arrested based on information sent to the state anonymous tip line and mobile app, known as Safe2Tell. “They had a list, they had weapons, they knew exactly what they wanted to do,” said Colorado Attorney General Cynthia Coffman, whose office administers the program.







