An Airman connects a hose from an R-12 refueling truck to an E4-B June 16, 2020, as part of the first operational refueling using the Type III Underground Fuel System since it was damaged in the March 2019 flood. While the system was down, the 55th Logistics Readiness Squadron Fuels Flight was required to use a R-11 refueling truck to fuel aircraft. Using the R-11 refueler has a limited tank capacity and slower fueling speed and requires more Airmen to operate it.