Without POL, Pilots can’t breathe
Senior Airman Verdes Cato, 9th Logistic Readiness Squadron cryogenics technician, smells the Liquid Oxygen (LOX) in the beaker at Beale Air Force Base, California, July 21, 2022. Airmen smell and observe if the LOX has any discoloration, discrepancies or smell. (U.S. Air Force Photo by Staff Sgt. Colville McFee)