I happened to come across a TV show last night where they were diving for lost H-bomb at tybee island..

pretty amazing..

http://en.wikipedia.org/wiki/1958_Tybee_Island_B-47_crash


The 1958 Tybee Island B-47 crash was an incident on February 5, 1958 in which the United States Air Force lost a 7,600 pound (3,500 kg) Mark 15 hydrogen bomb in the waters off Tybee Island near Savannah, Georgia, USA. 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, it was presumed lost somewhere in Wassaw Sound off the shores of Tybee Island.