Many years ago, we had a rash of airplane highjackings in this country, particularly out of Miami airport. One such plane was hijacked on its way to New York. "Turn the plane around and head for Havana," ordered the hijacker gruffly. The pilot could tell that the man was desperate, so he did what the hijacker said. When the gunman tried to intimidate the passengers, however, they started roaring with laughter. No matter what the hijacker did, the passengers laughed. They laughed all the way to Havan…