U.S Air Force Staff Sgt. Mario Shanks, non-commission officer in charge of the fuels lab with the 379th Expeditionary Logistics Readiness Squadron, Fuels Management Flight, performs a quality control test at Al Udeid Air Base, Qatar, July 24, 2017. A quality control test is conducted regularly to ensure the fuel going in the aircraft or vehicle meets all standards. (U.S. Air Force photo by Tech. Sgt. Amy M. Lovgren)