and i just ran as fast as i could to the nearest forest so i could hide. and i called my mom. >> reporter: police racing to santa fe high school. >> he's actually shooting. he's in the art room. we've got shots fired right now, guys. >> reporter: student peter matuza tells marcus moore he was right there when the shooter unloaded. >> he opened fire with a shotgun and shot one of my other friends in the head. her body fell down not too far from where i was under the table. that's when he turned like this and opened fire with the revolver. >> reporter: kids lining up on the field emptying their backpacks for officers to inspect. their hands on their heads. they were patted down one by one. with students shaken outside others hiding in classrooms. their parents getting the dreaded phone call. >> she called. she said, "mom, there's shots." i turned around, i said, "i'm coming, i'm coming." stayed on the phone with her the whole time. just kept talking to her, kept telling her to stay calm, stay