Master Sgt. Daniel Keller, a combat controller in the 123rd Special Tactics Squadron, attends a ceremony to present him with the Airman’s Medal at the Kentucky Air National Guard Base in Louisville, Ky., June 12, 2021. Keller earned the award for heroism in recognition of his actions to save human life following a traffic accident near Louisville in 2018. (U.S. Air National Guard photo by Tech. Sgt. Joshua Horton)