Evergreen school shooting's two teenage victims hailed as heroes

The latest: Authorities on Thursday said the second victim was a 14-year-old boy, whose family has yet to release his name. The other victim, identified earlier this month, is 18-year-old Matthew Silverstone.

Zoom in: The younger teen's family said he and a friend confronted the assailant face-to-face before the 14-year-old was shot at close range.

• The teen then fled the building — warning classmates along the way — before collapsing at a nearby recreation center where an on-staff EMT rendered aid.
• He has undergone multiple surgeries for traumatic gunshot wounds, according to his family.

Silverstone has also been hailed a hero. Classmates wrote cards crediting him with urging students to flee and trying to disarm the shooter. "So many of us owe our safety to you," a fellow student wrote in a card obtained by CPR.

• Outside of the school, Silverstone was seen grappling with the shooter before he was fired upon, the Denver Post reports.
• He remains in critical condition, "facing multiple surgeries and a long road to recovery" — but is showing "signs of improvement each day," according to his family's GoFundMe page.

Catch up quick: Authorities identified the suspected shooter as 16-year-old Desmond Holly. He fired 20 rounds with a revolver before fatally shooting himself outside Evergreen High School, which has over 900 students and is about 30 miles southwest of Denver.

• Investigators say Holly was "radicalized through an extremist network," though his motive remains unclear.
• His online behavior was so alarming the Anti-Defamation League alerted the FBI in July, but agents were unable to tie the activity back to him, 9News first reported.

What we're watching: How Holly obtained the gun remains under investigation.