By Nancy Pope, Curator and HistorianOn June 19, 1958, at the height of the Cold War, nuclear submarine U.S.S. Nautilus (SSN-571) sailed into the Chukchi Sea bounded by two points of Alaska. The crew were under top-secret orders to be the first submarine to cross under the North Pole. The trip was oddly designated “Operation Sunshine.”Frank Holland (left) and John Krawczyk (right) marking some of their envelopes on board the USS Nautilus