Airman 1st Class John Pisano, 633rd Logistics Readiness Squadron fuels distribution operator, prepares an R-11 fuel truck for a hot-refuel operation at Langley Air Force Base, Va., Mar. 14, 2013. Hot-refuels are when a jet is refueled while still running, allowing the jet to get back in the air quickly. (U.S. Air Force photo by Senior Airman Brittany Paerschke-O’Brien/Released)