Airman 1st Class William Manion, 33rd Maintenance Squadron fuel systems apprentice, and Senior Airman Samantha Schmedeke, 33rd MXS fuel systems journeyman, ensure a fuel probe is clear of debris before use at Eglin Air Force Base, Fla., May 16, 2016. This tool is used to check the fuel level of an F-35A Lightning II after flight. (U.S. Air Force photo/Senior Airman Andrea Posey)