Truck 6 and Tanker 6 alerted for the Barn Fire on Mt. Tabor Rd. Middletown Chief 7 on scene reported working barn fire and requested Tanker task force, Engine Tanker 8 alerted on tanker task force. Truck 6 staged and made up manning for tower 1 . Tanker 6 was nurse tanker and was supplied by Engine 211( Wolfsville ) and Engine Tanker 7 ( Smithsburg ) by dual 4 " supply lines. Tanker 6 Supplied Engine 83 (Myersville ) and Frederick Truck 41 and Tower 1 . Tanker 6 pump over 150,000 gallons of water. Crews also asst with fire suppression.