Senior Airman John Justiniano, 633rd Logistics Readiness Squadron fuels distribution operator, disconnects a pantograph for the underground hydrant system at Langley Air Force Base, Va., March. 14, 2013. The three-mile-long underground hydrant system allows fuel from the tank farm to be easily transported to the flight line. (U.S. Air Force photo by Senior Airman Brittany Paerschke-O’Brien/Released)