Everyone knows the tragic story. On a hazy, mid-July evening 20 years ago, a small airplane crashed into the Atlantic Ocean en route to Martha’s Vineyard, Massachusetts. The passengers on board were something of American royalty—John F. Kennedy Jr., son of former president John F. Kennedy and cultural icon Jacqueline Kennedy Onassis, his wife Carolyn Bessette Kennedy, and her sister Lauren Bessette. They were on their way to a summer wedding. No one survived.