More than 400 Airmen and family members attend an award ceremony at the Kentucky Air National Guard Base in Louisville, Ky, Aug.13, 2019, to bestow the Air Force Cross on Tech. Sgt. Daniel Keller, a combat controller in the 123rd Special Tactics Squadron. Keller earned the award — second only to the Medal of Honor — for valor on the battlefield in Afghanistan. (U.S. Air National Guard photo by Staff Sgt. Joshua Horton)