A man was shot to death in the hospital after an argument between a family member and a friend.
Karen Williams, 50, was visiting the hospital in an ambulance on Saturday when she heard the gunshot.
She said she went to help a man who was bleeding and in a coma.
Williams said she and her husband rushed to help but they were already in the ICU when the man came out of the coma.
The couple said the man had been with his family in South Carolina when he heard the shots and he had been shot twice.
The suspect was shot in the head.
A suspect is being questioned by detectives in Columbia, South Dakota.