ELLSWORTH AIR FORCE BASE, S.D. -Airman 1st Class Angela Griffen, 28th Logistics Readiness Squadron fuels technician, demonstrates how to conduct a visual inspection of JP-8 jet fuel to Col. Trent Edwards, 28th Mission Support Group commander, Sept. 14. The inspection examines fuel for any colors, water or sediment indicating impurities. (U.S. Air Force photo/Staff Sgt. Marc I. Lane)