Have just found this thread through Google. I'm sorry to have to tell you all that my father, David O'Docherty, died yesterday morning while swimming off Martha's Vineyard where he and his wife Gail were staying with friends. It seems likely that he had a heart attack. He was 75 and still going strong, tho not in the best of health. We're all very shocked at the moment and still trying to absorb the news.