U.S. Air Force Staff Sgt. Jesse Ball, 20th Logistics Readiness Squadron fuels lab technician, observes a fuel sample, checking the fuel’s levels and additives at Shaw Air Force Base, S.C., June 26, 2012. Quality assurance is necessary to verify that any fuel that goes into aircraft will yield maximum results and performance. (U.S. Air Force photo by Airman 1st Class Daniel Blackwell/Released)