Without POL, Pilots can’t breathe
Airman 1st Class Randy Willis 9th Logistic Readiness Squadron cryogenics technician, carefully handles Liquid Oxygen (LOX) at Beale Air Force Base, California, July 21, 2022. At certain temperatures, oxygen can freeze and turn into liquid, which is collected in the beaker. (U.S. Air Force Photo by Staff Sgt. Colville McFee)