U.S. Air Force Col. Richard Tanner, 18th Wing vice commander, reviews spark tank submissions using the Valid Eval system May. 10, 2019, at Kadena Air Base, Japan. The Shogun Spark Tank was the first Spark Cell to use the Valid Eval system. (U.S. Air Force photo by Senior Airman Michael Jones)

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Photo by: Senior Airman Michael Jones |  VIRIN: 190510-F-JX890-1004.JPG