Fuel: No flying without the good stuff
Airman 1st Class Darren Albrecht finishes shaking fuel and water together for five minutes at Spangdahlem Air Base, Germany. Water is added to the fuel for this test because it traps the fuel system icing inhibitor, pulling it out of the fuel. After two minutes he will learn the FSII level on a refratometer. Airman Albrecht is a 52nd Logistics Readiness Squadron fuel laboratory technician. (U.S. Air Force photo/Staff Sgt. Tammie Moore)