 Did you know this man is skydiving with a nuclear bomb. It is called the Special Atomic Demolition Munition and it is a small man portable atomic bomb. It's 12 inches in diameter, 18 inches long and weighs roughly 58 pounds. Transportable in what looks like a gym bag, it has everything needed to make an estimated yield of between 10 and 1000 tons of TNT including the warhead, a fuse and a firing system with a mechanical timer. Conceived in 1960 and in service between 1964 and the 1980s, this weapon thankfully was never used in anger before its retirement. Officially intended for both offensive and defensive use including flank protection and engineering. Or I personally think it is a bit of a dumb idea.