Niles Fire Dept. Ambulance No. 2 based at Niles Fire Station No. 2 at Dempster Street and Cumberland Avenue. (Niles Fire Dept. photo) Niles paramedics on Ambulance No. 2 responded to two cardiac victims within the span of 2-1/2 hours Thursday afternoon, restarting one patient's heart who was in cardiac arrest and identifying the blockage