A couple dozen Chicago police officers, paramedics and other emergency personnel filed into Julian High School on Thursday, with a mobile police command center parked outside and officials donning neon vests visible through the lobby windows.
The team was participating in an active shooter drill, the first at Chicago Public Schools since 2018, in preparation for the new school year and in the wake of mass shootings around the country — particularly the Uvalde, Texas, massacre that left a couple dozen children and educators dead.
