Callie, a 123rd Special Tactics Squadron search and rescue K-9, alerts Master Sgt. Rudy Parsons, her handler, after locating a simulated casualty during exercise Patriot North, an annual domestic operations exercise designed to provide natural disaster response training at Fort McCoy, Wis., July 17, 2019. Callie is currently the Defense Department’s only SAR dog. (U.S. Air National Guard photo by Staff Sgt. Joshua Horton)

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Photo by: Staff Sgt. Joshua Horton |  VIRIN: 190717-Z-DI861-0971.JPG