Cameras survey the courtyards and exterior walkways. There, visitors are screened carefully from behind a bulletproof glass window and, if approved, admitted through a locked metal interior door. After incoming students file through Del Sol’s two gates under the watchful eyes of campus employees, the only entry is through a glass cube-like lobby. At Del Sol, two perimeters of 8-foot-high black fencing - designed to deny a foothold to potential climbers - surround the campus and fill openings between the buildings’ edges.
