Army Capt. Shanell Thomas, a veterinarian and Army Staff Sgt. Rene Aventura, a field veterinary service technician, both with the 109th Medical Detachment Veterinary Services out of Garden Grove, Calif., prepare vaccines for cattle during Resolute Sentinel 21 in Melchor De Mencos, Guatemala, June 29, 2021. RS-21 is an exercise to train and partner nation military engineers, veterinary personnel and medical professionals for humanitarian assistance and defense interoperability operations.

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Keywords: 21, afsouth, care, guatemala, resolute, rs-21, sentinel, southcom, veterinary