It's cold and still dark. The front parking lot is surprisingly empty. This is visitor's parking, usually full. Today the Air Force recruiting team is visiting, complete with an 18-wheeler full of displays. They get the parking lot.
Visitors park elsewhere.
This is Gledhill's sixth year at Dunnellon High, a school with 1,400 students. He's the only one wearing a Marion County Sheriff's Office uniform. That's pretty visible. He knows a lot of students by their first names and imprints everyone by their face. Gledhill sees a guy from behind, walking along with his hood pulled up.