Nuclear bombs have been on people's minds lately as tensions with North Korea escalate. For government agencies and disaster planners, however, nuclear bombing is on their minds pretty much all the time, regardless of the news cycle. But the typical scenario the government looks at has less to do with long-range missiles and Cold War-style total annihilation, and more to do with ground detonation of a nuclear bomb set off by terrorists—specifically, a 10-kiloton (KT) nuclear bomb. For perspective, a 10 KT bomb is a little smaller than the size of the bomb the US government set off over Hiroshima, and is equivalent in strength to around 5,000 Oklahoma City truck bombs. (North Korea's nuclear bombs are thought to be around that same size range as well.)
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