Company 9 and Rescue 1 dispatched AMA for Company 1 for a MVC with possible injuries. Engine 92 responded with 2, T-18 with 2, M-17 with 1 and Chief 9. Arrived on scene to find a 3 vehicle collision minor damage to the service truck East of the scene and severe damage to the other 2 vehicles that collided head on. Both lanes of Collierstown Rd were blocked. Two patients transported.