U. S. Army Reserve Sgt. Jacob Rodriquez, from Tucson,

U. S. Army Reserve Sgt. Jacob Rodriquez, from Tucson, Ariz., a petroleum laboratory specialist with the 418th Quartermaster Battalion, visually inspects a fuel sample collected during the Quartermaster Liquid Logistics Exercise (QLLEX) at Fort Huachuca, Ariz., June 9. QLLEX is an exercise allowing Army Reserve units to train delivering fuel and water at the tactical, operational, and strategic levels. (Photo by Sgt. 1st Class Walter Talens, 311th ESC).