Crews from Milton responded to a report of a burning odor on Milton-Ellendale Hwy. Crews from Milton found an Exit sign that had some heat damage. Staff also found a seized motor on a HVAC unit. Crews from Milton remained on scene for about a half an hour. Deputy Millman had the Milton Command. Units responding, 85-5, 85-2, Rescue 85, Tanker 85, 85-8, B-85, DSFP.