paul beman is in centennial, colorado, near where the shooting took place. paul, what is the latest? >> reporter: that's right. i'm very near where the shooting took place. i'm on the east side of the school. the shooter entered the west side, the far side, and made it quite a distance in the school before there was confrontation where one student was shot. at that point another student shot. not clear how much later that happen. the shooter made his way far into the school before this incident went on for about 20 minutes, we're told, before the she have inflicted gunshot wound brought it to an end. as you mentioned, tony, the student who was more seriously injured is in the hospital, is in surgery now, as you can see there is still an enormous police presence. just to the south of us there is the lutheran church where there was a reunification point for teachers and students after they were brought out of the school. we heard from one of the students what she heard when the shooting began. >> i was sitting in the cafeteria with three of my friends. i heard