Just after the 8 o'clock hour, Sussex EOC alerted Sta. 85 and County ALS for a MVC on Sand Hill Rd. in the area of Lavinia St. Ambulance 85 arrived to find a two vehicle MVC with 5 patients and declared a level 1 MCI. Engine 85-5 arrived with Asst. Chief Millman assuming Command and EMS Chief Millman assuming the EMS sector. After a short time, crews determined that four patients would be transported in B-85, BLS, and the last would refuse. Command placed the situation under control and cancelled all ALS and mutual aid ambulances. Engine 5 secured the vehicles and returned. Units responding, B-85, 85-5, Rescue 85, 85-10, A-75, A-89, D-93, Medic 111, Medic 108, DSP, MPD, DSFP.