These student whistleblowers spoke up to prevent a shooting

Aired: 4/22/2015 | 0:04:32 | Clip
One year ago, two students in Lebanon, Pennsylvania, began sharing plans to gun down their classmates. They may have gotten away with it had it not been for a group of students who alerted school authorities. Young journalists from NewsHour’s Student Reporting Labs look at the actions of the whistleblowers that led to the arrest of the potential shooters.