CBS Austin spoke to UCLA Luskin’s Ron Avi Astor about a tip that may have prevented a school shooting in Texas. Authorities were alerted to posts from a 17-year-old girl who threatened to purchase weapons and attack her former elementary school. The girl was arrested and charged with the third-degree felony of making a terroristic threat. “I think thinking about these kinds of shootings as terrorism is actually really helpful,” said Astor, a professor of social welfare and authority on school violence. News coverage of the incident may encourage more people to report concerning social media posts in the future, he added. Decisive action taken by friends, acquaintances or family members who view a troubling post, text or email is “the No. 1 reason why these shootings are averted,” Astor said.