Pictured here is John Fitzgerald "Jack" Kennedy, the 35th President of the United States hanging out with little Caroline and John Jr's in the Oval Office, Halloween of 1963. Sadly, the assassination of JFK took place the following month. This photo is one of the last the former president took with his children. 

Little John Jr. grew up to be a lawyer, journalist, and magazine publisher. He died in a plane crash in 1999. Today, Caroline is the only surviving child of President Kennedy and former First Lady Jacqueline Onassis. She grew up to become a prominent author, attorney, and diplomat who served as the United States Ambassador to Japan from 2013 to 2017. Much like her mother, she's an advocate for education reform and stays involved with charitable work.