Overhearing A News Today

Including maria yovanovitch testifying as president trump tweeted about her. >> he said, well, shes going to go through some things. what did you think when president trump told president zelensky, and you read that you were going to go through some things? >> shes going to go through some things. it didnt sound good. it sounded like a threat. >> did you feel threatened? >> i did. >> as we sit here testifying the president is attacking you on twitter. what effect do you think that has on other w...

Reporter: tonight, a quick-thinking teen is being hailed as a hero for preventing a possible shooting at this school near pittsburgh. >> had they not reported this, there couldve been a major catastrophe today at uniontown high school. >> reporter: the teen, overhearing a 14-year-old classmate on the bus, allegedly talking about plans to shoot four students today at uniontown high school in pennsylvania, recording the conversation and contacting police. >> that student overheard it and took appr...