U.S. Air Force crew chiefs assigned to the 1st Fighter Wing and 733rd Logistics Readiness Squadron fuel operators use pantograph fueling systems to fuel U.S. Air Force F-22 Raptors during hot refueling operations at Joint Base Langley-Eustis, Va., Oct. 31, 2017. The A pantograph fueling system has a long arm with a fuel nozzle at the end, which is connected to a primary fuel line below the flightline. (U.S. Air Force photo by Staff Sgt. Carlin Leslie)