The Twin Rivers CCI,CIC & H.T. Organizing Committee regrets to announce the death of Walterstown Don, a 16-year-old Irish Sport Horse gelding (Don Juan De La Bouverie x Walterstown Treacy VII) owned by Lauren Burnell and ridden by Rebecca Braitling. Walterstown Don was competing in the CIC3* division, collapsed during the cross-country phase between fences 18 and 19 and died of causes unknown at this time pending necropsy. Braitling was attended to on site and then was transferred to Sierra Vista Regional Medical for further care.