Tech. Sgt. Daniel Keller, a combat controller in the Kentucky Air National Guard’s 123rd Special Tactics Squadron, was presented with the Air Force Cross by Air Force Chief of Staff Gen. David L. Goldfein during a ceremony at the Kentucky Air National Guard Base in Louisville, Ky, Aug.13, 2019. Keller earned the medal for valor on the battlefield in Afghanistan. (U.S. Air National Guard photo by Staff Sgt. Joshua Horton)

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Photo by: Staff Sgt. Joshua Horton |  VIRIN: 190910-Z-DI861-0104.JPG