There is a silly story about an elderly Scottish couple who had never flown before, but who decided they were going to visit their children in New York and see their grandchildren for the first time. They were on a charter flight in a Lockheed TriStar (3 engines). They were about half-way out over the Atlantic when their pilot’s voice came over the intercom, "This is your captain speaking. Ladies and gentlemen I feel I ought to let you know that one of our three engines has failed. There is, of course, no need for alarm. This plane is entirely airworthy flying on two engines but I regret to say we will be one hour late in arriving in New York."
One half hour later, inevitably, with that desperate calm that is reserved by air pilots and astronauts for conditions of extreme emergency, the pilot of the TriStar spoke again: "This is your captain speaking. I regret that we have lost the second of our engines. But
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