At approx. 0250 hrs the Georgetown Fire Co. was dispatched to assist Station 83 on a trailer fire. Eng. 77-4 responded with Deputy Chief Barrett and we arrived 3rd piece in. Eng. 77-4's crew reported to the rear of the trailer and assisted with interior operations. Tanker 77 and Eng. 77-3 crews provided manpower relief and assisted with overhaul. Units remained on scene for about 2 hrs before being released by 83 Command.