O2 fill up
Tech. Sgt. Joshua Noel, 96th Logistics Readiness Squadron, shuts down the release valve on the liquid oxygen container after refilling the mobile aircraft oxygen refueling tank at Duke Field Feb. 11. The tanks will be picked up and taken to the flight line to refuel the oxygen tanks on the 919th Special Operations Wing MC-130E Talons. (U.S. Air Force photo/Tech. Sgt. Samuel King Jr.)