Serving again: Prior POL troops continue to fuel airpower in Afghanistan
Donald Williams, 455th Expeditionary Logistics Readiness Squadron fuels management section, observes a sample of liquid oxygen at Bagram Airfield, Afghanistan, Aug. 3, 2017. Williams drew a sample of liquid oxygen to test for particulates and odor. If either is found, Williams must determine what is causing the contamination and restore the oxygen to a useable state. Williams served in the U.S. Army for 11 years as a petroleum supply specialist. (U.S. Air Force photo by Staff Sgt. Benjamin Gonsier)