Fuel quality surveillance testing
U.S. Army Sgt. 1st Class Luis A. Cotte, petroleum lab certification NCO with the 969th Quartermaster Detachment, 1st Sustainment Command (Theater), left, reviews a sample testing with Spc. Christian M. Valencia, petroleum laboratory specialists with Alpha Company, 640th Aviation Sustainment Battalion, 40th Combat Aviation Brigade during the fuel laboratory quarterly inspection, at Camp Arifjan, Kuwait, June 14, 2016. (U.S. Army photo by Sgt. 1st Class Naurys Marte/Released)