But decades later, in 1994, documents released from a 1966 Congressional testimony revealed that the Tybee Mark 15 was indeed an intact nuclear weapon. The Tybee bomb is hardly an isolated incident.

The recent spate of attacks between Israel and Iran have ratcheted up tensions in the region and stoked fears of an imminent nuclear war ... of two 3.8 megaton Mark 39 warheads, "260 times ...