U.S. Navy Master Chief Kathryn VanHooser repeats the Corpsman's oath during the 115th Corpsman Birthday celebration at Chapel A, here, June 17. The ceremony included cake-cutting which highlighted the oldest and youngest corpsmen on Camp Leatherneck. Command Master Chief Kelly A. McNulty, the Regional Command (Southwest) command master chief and Springfield, Mo., native, spoke at the event to commemorate the corpsmen who have given the ultimate sacrifice since June 17, 1898, when the Navy's Hospital Corps was created and to give thanks to the corpsmen of today.