Spc. Zackary T. Helman (left), an ammunition stock control and accounting specialist the 371st Sustainment Brigade, and Sgt. 1st Class Guillermo Matos (right), the ammunition logistical non-commissioned officer in charge for the 143rd Sustainment Command (Expeditionary), check for dirt and debris in the Automated Tactical Ammunition Classification System at Camp Arifjan, Kuwait. The country's dusty climate makes the machine susceptible to jammed belts, clogged sensors and dirty lenses. Helman's duties included blowing the machine clear of foreign objects.