In 1971 (!), flying from ZRH to JFK in a TWA 707. The flight originated in Israel somewhere, and had Israeli diplomats on board. After clearing Ireland, we were told by the pilot that there was a bomb threat, and we had to make an emergency landing in Shannon. Turned around, dumped fuel, and landed way out away from anything. Bussed to the terminal, waited 8 hours for the plane to be searched. We got back on the same plane, flew to JFK (arriving well after midnight) and flew 1st class the following morning to DTW. That is an adventure for a 10 year old!