Army Reserve Staff Sgt. Jerril Billy shows Marine Sgt. Ken Wall the process of testing fuel from fuel farms during the Quarter Master Liquid Logistics exercise held at Camp Sierra in the 62-area here June 6. The Quarter Master Liquid Logistics exercise is an Army reserve exercise that helps train service members in the movement of large amount of fuels from one fuel farm to another. Billy is the petroleum lab supervisor for the 316th Quarter Masters Battalion stationed in Okmulgee, Ok. Wall is a bulk fuel specialist and a squad leader for Bulk Fuel Company A, stationed in Tucson, Ariz. - Army Reserve Staff Sgt. Jerril Billy shows Marine Sgt. Ken Wall the process of testing fuel from fuel farms during the Quarter Master Liquid Logistics exercise held at Camp Sierra in the 62-area here June 6. The Quarter Master Liquid Logistics exercise is an Army reserve exercise that helps train service members in the movement of large amount of fuels from one fuel farm to another. Billy is the petroleum lab supervisor for the 316th Quarter Masters Battalion stationed in Okmulgee, Ok. Wall is a bulk fuel specialist and a squad leader for Bulk Fuel Company A, stationed in Tucson, Ariz.