GLENDALE, CAMBRIA COUNTY - Most, if not all, schools have security cameras and lock their doors.
But it's what teachers and administrators at Glendale School District do with those measures and more that they feel makes their buildings safe.
Just last week, on a teacher in-service day, the school held an "active shooter" drill. Students like 11th grader Patrick Brown volunteered to come to school on their day off to help police, teachers and staff. He ran through the hallways frantically as local law enforcement searched for the "gunman" shooting in the school.
"It was very, very intense," said Brown. "It was insane."
Now, Brown and the others who participated are reflecting on what they learned. "Help if you can, above all, don't be a hero," Brown said. "Keep yourself safe, keep your friends safe."
Life Skills teacher Marci Mazenko said her main concern was to keep the students safe and to keep them out of sight in her classroom. She also said she's comfortable with the security already in place at the school, including the security guard.
"(She's) amazing. It seems like she's everywhere," said Mazenko.
There are security cameras, around 100 of them, practically everywhere in hallways, rooms, and outside. They can be monitored on certain computer screens and even on iPads.
But Glendale High School Principal Gary Walstrom said, it all comes down to: "Just everybody being aware and on top of things, and it's reported to the correct people immediately."
Students like Patrick Brown hope the teachers get the message. "They have to understand that classrooms of students are relying on them to keep them safe."