'Dear first responders...': Thank you letters sent to officers who worked STEM school shooting

Colorado state troopers didn't rush to stop the shooting at STEM School Highlands Ranch in search of a "thank you," but they're immensely grateful that they received dozens of them from students there.
Published: 9:17 PM MDT September 17, 2019
Updated: 9:16 PM MDT September 17, 2019