Tech. Sgt. Timothy Andrews, 1st Special Operations Logistics Readiness Squadron noncommissioned officer in charge of fixed facilities, displays a liquid-oxygen sample at Hurlburt Field, Fla., Aug. 26, 2020. Air commandos assigned to the 1st SOLRS collect samples of liquid oxygen and test the odor to ensure all oxygen delivered to 1st Special Operations Wing aircraft is safe for aircrew members. (U.S. Air Force photo by Staff Sgt. Joseph Pick)