Devon Erickson, 18, accused of taking part in a deadly

Devon Erickson, 18, accused of taking part in a deadly school shooting at the Science, Technology, Engineering and Math (STEM) School in Highlands Ranch, enters the courtroom at Douglas County Courthouse where he faces murder and attempted murder charges, in Castle Rock, Colorado, U.S., May 15, 2019. Joe Amon/The Denver Post/Pool via REUTERS