On this day, in 1958, a B-47 bomber on a training mission off the cost of Georgia collided at 37,000 feet with an F-86 fighter. The B-47 was able to stay airborne, barely, and requested permission to drop its payload so that it didn't detonate in a crash landing. Once approved, the pilot jettisoned his payload - a 7,000+ lbs. Mark 15 hydrogen bomb with a 3.8 megaton yield - into the waters off of Tybee Island near Savannah, Georgia. Despit a dillegent search, the "Tybee bomb" has never been found. Oooops indeed.