Students at the Recreation Center at Northridge in Highlands Ranch after a shooting at the STEM School Highlands Ranch on May 7, 2019. (credit: CHET STRANGE/AFP/Getty Images)
STEM School Highlands Ranch Shooting
(credit: CBS)
STEM School Highlands Ranch Shooting
(Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
(Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
(Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
Police officers direct traffic after the shooting (credit: CHET STRANGE/AFP/Getty Images)
School Shooting In Highlands Ranch, Colorado Leaves 1 Dead And Multiple Injured
Douglas County sheriff Tony Spurlock walks into the Douglas County Sheriffs Office Highlands Ranch Substation to hold a press conference regarding the shooting at STEM School Highlands Ranch on May 8, 2019. (Photo by Michael Ciaglo/Getty Images)
STEM School Highlands Ranch Shooting
(Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
A Colorado State Park officer directs a school bus with children evacuated from the scene of the shooting. (Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
(Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
(Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
(Photo by Tom Cooper/Getty Images)
STEM School Highlands Ranch Shooting
Police officers stand outside the home of one of an alleged gunman (credit: CHET STRANGE/AFP/Getty Images)
STEM School Highlands Ranch Shooting Scene
(credit: Michael Ciaglo/Getty Images)
STEM School Shooting
(credit: CBS)
STEM School Highlands Ranch Shooting
(credit: CBS)
STEM School Highlands Ranch Shooting
(credit: CBS)
STEM School Highlands Ranch Shooting
District attorney George Brauchler speaks to the media regarding the shooting at STEM School Highlands Ranch during a press conference at Douglas County Sheriffs Office Highlands Ranch Substation on May 8, 2019. (Photo by Michael Ciaglo/Getty Images)
STEM School Shooting
(credit: CBS)
School Shooting In Highlands Ranch, Colorado Leaves 1 Dead And Multiple Injured
Colorado governor Jared Polis speaks to the media regarding the shooting at STEM School Highlands Ranch during a press conference at the Douglas County Sheriffs Office Highlands Ranch Substation on May 8, 2019 in Highlands Ranch. (Photo by Michael Ciaglo/Getty Images)
STEM School Shooting
(credit: CBS)
STEM School Shooting
(credit: CBS)
STEM School Shooting
(credit: CBS)
STEM School Shooting
(credit: CBS)
STEM School Shooting
(credit: CBS)
STEM School Shooting
STEM School Shooting
(credit: CBS)
STEM School Shooting
(credit: CBS)
School Shooting In Highlands Ranch, Colorado Leaves 1 Dead And Multiple Injured
A police officer walks past the STEM School Highlands Ranch entrance on May 8, 2019. (Photo by Michael Ciaglo/Getty Images)
STEM School Shooting
(credit: CBS)
STEM School Shooting
(credit: CBS)
School Shooting In Highlands Ranch
Gov. Jared Polis (credit: Michael Ciaglo/Getty Images)