Operation Sentinel Justice combines real-world medical support, training to strengthen AR-MEDCOM, MRTC readiness
Sgt. Raijuenea Aravena, center, a veterinary technician assigned to the Rockville, Md., based 422nd Medical Detachment Veterinary Services, instructs Sgt. Karissa Downing, left, on canine intubation procedures under the supervision of Lt. Col. Jessica Sprague during Operation Sentinel Justice at Camp Shelby, Miss., June 15, 2026. The training strengthens veterinary medical readiness and prepares Army Reserve personnel to support animal care requirements in operational environments. (U.S. Army Reserve photo by Sgt. 1st Class Jayson Rivera)