By Ed Lavandera and Dana Ford, CNN
Oklahoma City (CNN) -- Second-grade teacher Tammy Glasgow walks around what's left of Briarwood Elementary, struggling to pick out of its wreckage the things that once made a school.
"This was the cafeteria."
"This is where my desk sat."
"This is my classroom door."
"That yellow wall that's standing, that's where we were," said Glasgow, pointing to a squat stack of cinder blocks.
She, like many teachers at Oklahoma City's Briarwood, helped to keep students safe when the tornado tore through Monday, killing at least 24 people in the area, but incredibly, given the state of the building, no one at Briarwood.
Their actions no doubt saved lives.
Many have called the teachers -- at least one of whom literally shielded children with her body -- heroes.
But Glasgow said simply: "It's just our job."
Right before the tornado hit, she hurried students into two bathrooms and a closet. There were about eights boys in the boys' bathroom, including Glasgow's son, and a dozen girls in the girls' bathroom.
She and other adults were with three children in the closet.
"Before I shut the doors, because both bathrooms had doors, I said, 'I'm going to shut these doors,' and I said, 'I love you.' The boys looked at me a little strange. (I) walked in the girls' (bathroom) and said, 'I love you' and they all said 'I love you' back.
"I just told them to pray, and then that's what we did the whole time in the closet, just prayed," said Glasgow.
The storm blasted through.