CENTENNIAL, Co.- Two sophomore students who were in the library as the Arapahoe High School shooting unfolded say they heard the gunman, Karl Pierson shout, "I'm not perfect" right after shooting his classmate, Claire Davis, 17, in the head with a shotgun.
"At that point he was coming into the library and we were running out," explained Kate Molzahn and Delaney Mullins.
The two say they saw Davis injured as they were escaping.
"She was within this big cloud of smoke," said Molzahn. "She was on the ground when I saw her and at that point, there's not really much you can do."
It's difficult to imagine the fear Davis felt after police say she came face to face with the gunman, Karl Pierson. Students say Davis and Pierson were in the same English class. Zach Runberg was in that class, too.
"It was just weird seeing her in class knowing that in a matter of hours everything could change," said Runberg.
Classmates describe Davis as a happy and popular girl. They have set up donation sites for Davis who continues to fight for her life in the hospital.
"It's stressful to know that she's in there and there's not much we can do to help her," said Chris Davis, an acquaintance who placed the donation boxes on campus and at several counseling sites.
Students say their focus is now on recovery and lending a helping hand, saying that this tragic and sickening incident has brought a strong sense of unity to Arapahoe High School.
"Warriors always take care of one another and we're all bonding together," said Molzahn.
(KUSA-TV © 2013 Multimedia Holdings Corporation)