MISAWA AIR BASE, Japan -- Airman 1st Class Dorion Nelson, left, and Senior Airman Chase Rockcole, 35th Logistics Readiness Squadron cargo deployment function augmentees, clean a fuel tank July 21 outside of Hangar 949. The Airmen cleaned the tank before shipping to prevent the possibility of dirt and bacteria from one country entering and contaminating another country. (U.S. Air Force photo/Senior Airman Jamal D. Sutter)