Senior Airman Phillip Laugle (left) and Airman 1st Class Ryan Harris, 28th Logistics Readiness Squadron refueling maintenance technicians, remove a hose from a manhole cover during preventative maintenance at Ellsworth Air Force Base, S.D., March 8, 2012. To remove the manhole cover, the hose had to be disconnected from an automatic shutoff probe called the high-high probe. (U.S. Air Force photo by Airman Alystria Maurer/Released)