Staff Sgt. Anthony Espinoza, 28th Logistics Readiness Squadron petroleum oil and lubricants NCO in charge, monitors fuel gauges during a hot pit refueling activity at Ellsworth Air Force Base, S.D., Nov. 20, 2012. Hot pit refueling is a procedure performed in a combat environment to rapidly refuel aircraft while the aircrafts engines are running, which results in a speedy refueling an faster aircraft regeneration. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)