Senior Airman Phillip Laugle (left) and Airman 1st Class Ryan Harris, 28th Logistics Readiness Squadron refueling maintenance technicians, remove the cover from a fueling truck during preventative maintenance at Ellsworth Air Force Base, S.D., March 8, 2012. This manhole cover was removed to replace the seal which prevents fuel from overflowing out of the tank. (U.S. Air Force photo by Airman Alystria Maurer/Released)