Joe Robinson, 4th Logistics Readiness Squadron fire truck and refueling maintenance technician, adjusts a fuel sensor on the new Isometrics R-11 Refueler, May 17, 2016, at Seymour Johnson Air Force Base, North Carolina. The new R-11 has more automatic features to help prevent fuel waste and accidents. (U.S. Air Force photo by Airman 1st Class Ashley Williamson)