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Team tests concept demonstrator
Ryan Tipton, 412th Maintenance Squadron, fires up a legacy diesel generator to recharge the Hybrid Electric Flightline Cart Technology Pathfinder on the flightline here. The HEF maintained enough power to complete the required C-17 checks before it was due a recharge. (U.S. Air Force photo by Christopher Ball)

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Photo by: Christopher Ball |  VIRIN: 170214-F-IS743-002.JPG