(Left) Master Sgt. Jon Voigt, Air Combat Command Logistics Standardization and Evaluation Team fuels superintendant, evaluates Airman 1st Class Anthony Hareid, 28th Logistics Readiness Squadron fuels distribution journeyman, as he takes a sump sample here, Jan. 13. The sump sample is used to locate built-up water in the fuel separator. (U.S. Air Force photo/Airman 1st Class Adam Grant)