Tech. Sgt. Rudy Parsons, 123rd Special Tactics Squadron pararescueman, and his search and rescue dog, Callie, ride a UH-60 Black Hawk aircraft as part of Callie’s familiarization training at the Boone National Guard Center, Frankfort, Ky., Nov. 29, 2018. Callie is currently the Defense Department’s only SAR dog. (U.S. Air National Guard photo by Staff Sgt. Joshua Horton)