A 7,600 pound nuclear weapon that comes to be known as the Tybee Bomb is lost by the U.S. Air Force off the coast of Savannah, Georgia, near Tybee Island. The bomb was jettisoned to save the aircrew during a practice exercise after the B-47 bomber carrying it collided in midair with an F-86 fighter plane. Following several unsuccessful searches, the bomb was presumed lost, and remains so today.