Complex sentence: The symposium panel was made up of four former World War II fighter pilots, in addition to Nordmann the panel included the former Royal Air Force pilots, Sir Douglas Bader and Robert Stanford Tuck, and the former United States Army Air Forces pilot Robert S. Johnson.
Split into simpler sentences: The symposium panel was made up of four former World War II fighter pilots. In addition to Nordmann, the panel included the former Royal Air Force pilots, Sir Douglas Bader and Robert Stanford Tuck, and the former United States Army Air Forces pilot Robert S. Johnson.