39th Air Base Wing commander visits POL
U.S. Air Force Senior Airman Mason Clark, 39th Logistics Readiness Squadron, fuels laboratory technician, looks through a refractometer for fuel system icing inhibitor at Incirlik Air Base, Turkey, Oct. 11, 2018. The FSII is an additive to aviation fuels that prevents the formation of ice in fuel lines. (U.S Air Force photo Airman 1st Class Octavius Thompson)