U.S. Air Force Senior Airman Clayton Johnson, 52nd Logistics Readiness Squadron petroleum, oil, and lubricants journeyman, inspects a fuel sample for clarity and debris at Spangdahlem Air Base, Germany, Oct. 29, 2019. Johnson collected samples from two fuel tanks that were brought in from Bellheim, Germany. (U.S. Air Force photo by Airman 1st Class Alison Stewart)