RALEIGH - Mass-casualty incident at 421 S. Salisbury Street, with dozens of students complaining nausea, vomiting, and diarrhea. Originally dispatched as breathing difficulty with Engine 1, EMS 1, and Medic 94 about 9:30 a.m. Third-alarm medical response requested, along with additional fire units for manpower. Operation extended into mid-afternoon, with about 150 patients evaluated, some 30 treated, and five transported. Read detailed incident summary. Indoor shots using high ISO and ambient light, with flash just a couple times for equipment photos. "A" shift. Mike Legeros photographs.