Staff Sgt. Manuel Cienfuegos, 100th Logistics Readiness Squadron noncommissioned officer in charge of fuels laboratory, collects a sample of Jet Propellant 8 fuel Jan. 27, 2020, at RAF Mildenhall, England. Members of the 100th LRS fuels management flight perform quality assurance checks on the fuel to make sure only high quality gas is being put into aircraft, ensuring mission readiness. (U.S. Air Force photo by Airman 1st Class Joseph Barron)