Millersburg Fire Company units were dispatched mutual aid to Northumberland County at 1451 hours today to assist on a reported structure fire. Truck 20 responded with five, Engine 20 responded with three and Tanker 20 responded with three. This was the third call for today. Truck 20 arrived to assist units from Hickory Corners (64) and Dalmatia (62). Engine 20 positioned to lay a supply line to Truck 20 if needed. The fire was extinguished with one hose line from Engine 64. Millersburg crews assisted with some minor overhaul. Other units dispatched included Pillow (28) and Berrysburg (26).