In 1968, tragedy struck during a routine Cold War mission when a U.S. B-52 bomber carrying four hydrogen bombs crashed into the frozen waters near Thule Air Base in Greenland. The accident occurred after a fire broke out on board, forcing the crew to abandon the aircraft as it disintegrated over the Arctic. In the frantic recovery operation that followed, three of the nuclear bombs were located and secured — but one vanished beneath the ice. Despite extensive searches involving submarines, diver