https://www.dailymail.co.uk/news/article-8516549/John-Travoltas-wife-Kelly-Preston-dies-breast-cancer-aged-57.html
https://nypost.com/2020/07/13/john-travoltas-first-love-diana-hyland-also-died-of-breast-cancer/
https://www.the-sun.com/entertainment/1128379/john-travolta-son-jett-death/
https://beam.land/aviation/the-full-story-behind-travolta-s-private-jet-fleet-942