This was the first and only incident in which a superpower activated its nuclear suitcase.
All in Nuclear Weapons
Project Crested Ice
A bomber carrying four hydrogen bombs crashes, scattering radioactive debris across miles of sea ice.
The Palomares Incident
The accident dropped 4 hydrogen bombs on a small fishing village.
Sub vs Mountain
At about 2 in the morning the bow of the sub plowed into a wall of rock and mud.
Death at the Washington Monument
By seizing the Washington Monument he hoped to capture the world's attention.
Trinity Test
In the first successful test of an atomic weapon, the concrete and steel of the testing tower was vaporized instantly and the floor of the desert was turned into a bowl of glass 10 feet thick and 1000 feet wide.
Radioactive Boy Scout
A hazmat crew rolled into the suburban address and carefully dismantled a workspace that had been used by a 17-year-old Eagle Scout to create a primitive nuclear reactor.
The Peace Sign
The distinctive symbol was a combination of the letters N (for nuclear) and D (for disarmament) from the semaphore alphabet.
Missing: Nuclear Bomb
Researchers believe they have narrowed it down to an area the size of a football field.