4th EMS AGE: Ground power maintains air dominance
                Airman 1st Class Stephen Hallock, 4th Equipment Maintenance Squadron aerospace ground equipment technician, uses an oil reclaimer on an aircraft wing jack, June 22, 2015, at Seymour Johnson Air Force Base, North Carolina. As part of its routine maintenance, the aircraft wing jack receives an oil replacement before returning to the flightline. (U.S. Air Force photo/Airman Shawna L. Keyes)
                
                    
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