Over the last eight decades Tinker Air Force Base has hosted many a dignitary and personality. But on November 16, 1965, Major General Melvin F. McNickle was notified that "very important persons may come and go," and could arrive in less than five hours. Who were the guests? Princess Margaret, the sister of Queen Elizabeth, and her husband, the 1st Earl of Snowdon. This week on LoyalTV, join us in Midwest City to find out about the whirlwind royal visit during the princess' history-making American tour.