Staff Sgt. Robert A. Benson and Staff Sgt. Christopher R. Bratton, 36th Civil Engineer Squadron power production craftsmen, troubleshoot a generator suffering from poor fuel quality and manifold pressure leak Sept. 29, 2015, at Andersen Air Force Base, Guam. The 350 kilowatt generator is used during emergency operation of a sewage lift station that supports base housing. (U.S. Air Force photo by Airman 1st Class Arielle Vasquez/Released)