Master Sgt. Rudy Parsons, 123rd Special Tactics Squadron pararescueman, and Callie, his search and rescue K-9, complete a parachute insertion into Fort McCoy, Wis., July 16, 2019, as part of exercise Patriot North, an annual domestic operations exercise designed to provide natural disaster response training. Callie is currently the Defense Department’s only SAR dog. (U.S. Air National Guard photo by Staff Sgt. Joshua Horton)