District Crime Prevention: Patrols and maintains watch over buildings and grounds, checks doors and windows; conducts classroom refrigerator and freezer checks each shift for normal operating ranges; and reports accidents or defective conditions on foot and in, vehicle or fixed location. Patrolling to Maintain Public Safety: Monitors campus-wide safety, investigates disturbances, fire hazards, suspicious persons, hazardous conditions, trespassers, and other incidents occurring on campuses; assists in the investigation of incidents; and provides emergency aid.