Staff Sgt. Blake Walker, 316th Civil Engineer Squadron water and fuel systems craftsman, uses a ratchet wrench to loosen a nut on the filter separator constant pressure system inside a Navy Reserve fuel facility, as Airman James Porter, left, 316 CES water and fuel systems apprentice, and Airman 1st Class William Carmichael, 316 CES water and fuel systems apprentice, tilt a fuel drum to catch the fuel spillage at Joint Base Andrews, Md., March 30, 2010. (U.S. Air Force photo by Bobby Jones)