At 1947 hours, Dunkirk Engine 51, Engine 52, Ambulance 59, the Fire Chief & Assistant Chief were alerted for the serious auto accident at Route 4 & Chaneyville Road. Units arrived on location and found a 3 vehicle accident with one person trapped. The crew from Engine 52 extricated the patient & protected crews with a charged hoseline. Engine 51 handled the Landing Zone. Units cleared at 2028 hours.