It happened during a gym class run on the grounds of Perry Hall Middle School that went several laps and added up to about three miles.
"I seen one of the teachers running out there with a medical bag," said Alexis Queen, who is in 8th grade.
Around 9:15 a.m. Thursday, Officer Sloane Fuller was teaching the D.A.R.E. program when she got an emergency call into the classroom.
"And once I got there, I knew that it was a pretty bad situation. I immediately got on our police radio and got the medic started," Fuller said.
The nine-year Baltimore County School Resource Officer made every minute count, while she worked with her colleagues. A teacher confirmed the 13-year-old boy did not have a pulse. So Fuller started chest compressions, while another police officer arrived to do mouth-to mouth. Then the AED, which belonged to the school, arrived on the field.
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"I have never used the AED. I have done CPR in the past, but I've never used the AED, and I believe this one saved his life," Fuller said.
Parents got a recorded call from the principal, saying a child needed medical attention during class.
"The other kids saw what happened and if they were affected in any way that there would be counseling and stuff available for them," said Tia Gwinn, parent to a 7th grader.
Students were taken away from the child by the time Fuller arrived. He was in critical condition when he was transported to the hospital. We are told his condition has improved.
"I've never had anyone's heart actually start back up for me. This was a first for me… It's pretty great, miraculous… and very emotional," Fuller said.
Fuller says she thought about her own son, who will turn 13 this weekend, as she was trying to save the young boy.
As for SROs, every middle school in Baltimore County has one, and every high school has at least one.