Richard Paul Pavlick nearly attempted to assassinate then President-elect John F. Kennedy while the family vacationed in Palm Beach in December 1960. On December 11, Pavlick forwent his attempt because Kennedy was with his wife, Jacqueline, and their two children. Four days later, Pavlick's car, which had sticks of dynamite inside, was surrounded by police and he was arrested. Charges against Pavolick were dropped on December 2, 1963, 10 days after Kennedy was assassinated in Dallas, Texas. Additionally, a secret blast shelter was built on Peanut Island during his presidency because escalating Cold War tensions.